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(完整版)七年级上解方程50道

七年级上解方程50道

(1)1153412

x x -=+; (2)70%x+(30-x)×55%=30×65%; (3)5(2)3(27)x x -=-. (4)

511241263x x x +--=+; (5)2(y -3)-6(2y -1)=-3(2-5y ) (6)5(2)3(27)x x -=-;

(7)23-x -514+x =1. (8)()1322242x x ⎛⎫---= ⎪⎝

⎭; (9)3(x-2)+1=x-(2x-1) (10)

()11432123x x +--=+. (11)3

7615=-y ; (17)615+x =819+x -31x - (12)5

12152x x x -=--+; (18)5(x+2)=2(2x+7); (13)14

126110312-+=+--x x x (19)2(x+0.5)-3(x -0.4)=5.6 (14)325(2)x x -=-+; (20)3(x+2)-2(x+2)=2x+4

(15)23

13512+=++-x x x (21)911z +72=92z -75 (16)2x +3=x -1 (22)

52-x -103+x -352-x +3=0 (23)2(10-0.5y)=-(1.5y+2) (29)()x 15400x 21003+=-

(24)

15

1423=+--x x (30)1432312=---x x (25)05.035.22.04-=--x x (31)38316.036.13.02+=--x x x (26)

511241263x x x +--=+ (32)3(2x+5)=2(4x+3)-3 (27)5.702

.0202.05.21.0)32(2--=--x x (33)4y ﹣3(20﹣y)=6y ﹣7(9﹣y) (28)4x-3(x-20)=6x-7(9-x) (34)7(2x-1)-3(4x-1)=4(3x+2)-1

(35)

312x +=76

x + (41)2(x-2)-3(4x-1)=9(1-x) (36)(51)13(4-y)=14

(y+3) (42)15-(8-5x)=7x+(4-3x) (37)32x +=x-16x - (43)3(x-7)-2[9-4(2-x)]=22 (38)511241263

x x x +--=+; (44)120-4(x+5)=25

(39)1122(1)(1)223

x x x x ⎡⎤---=-⎢⎥⎣⎦; (45) x+12.5=3.5x (40)22)]2(49[2)7(3=----y y (46) 8x-22.8=1.2

(47)2(x-2)+2=x+1 (48)15-(8-5x)=7x+(4-3x)

(49)3(x-7)-2[9-4(2-x)]=22 (50)2(x-2)-3(4x-1)=9(1-x)

七年级上解方程50道

七年级上解方程50道 1.7(2x-1)-3(4x-1)=4(3x+2)-1; 2..(5y+1)+(1-y)=(9y+1)+(1-3y); 3.20%+(1-20%)(320-x)=320×40% 4.2(x-2)+2=x+1 5.2(x-2)-3(4x-1)=9(1-x) 6.x/3-5=(5-x)/2 7.2(x+1)/3=5(x+1)/6-1 8.(1/5)x+1=(2x+1)/4 9.(5-2)/2-(4+x)/3=1 10.x/3-1=(1-x)/2 11.(x-2)/2-(3x-2)/4=-1 12.11x+64-2x=100-9x 13.15-(8-5x)=7x+(4-3x) 14.3(x-7)-2[9-4(2-x)]=22 15.3/2[2/3(1/4x-1)-2]-x=2 16.2(x-2)-3(4x-1)=9(1-x) 17.11x+64-2x=100-9x 18.15-(8-5x)=7x+(4-3x) 19.3(x-7)-2[9-4(2-x)]=22 20.3/2[2/3(1/4x-1)-2]-x=2 21.2(x-2)+2=x+1

1.7(2x-1)-3(4x-1)=4(3x+2)-1 2.(5y+1)+(1-y)=(9y+1)+(1-3y) 3.[(-2)-4]=x+2 4.20%+(1-20%)(320-x)=320×40% 5.2(x-2)+2=x+1 6.2(x-2)-3(4x-1)=9(1-x) 7.11x+64-2x=100-9x 8.15-(8-5x)=7x+(4-3x) 9.3(x-7)-2[9-4(2-x)]=22 10.3/2[2/3(1/4x-1)-2]-x=2 11.5x+1-2x=3x-2 12.3y-4=2y+1 13.87X*13=5 14.7Z/93=41 15.15X+863-65X=54 16.58Y*55=27489 17.2(x+2)+4=9 18.2(x+4)=10 19.3(x-5)=18 20.4x+8=2(x-1) 21.3(x+3)=9+x 22.6(x/2+1)=12

七年级数学上册 一元一次方程计算题练习 50题(含答案)

一元一次方程计算题练习50题 解方程:3x+. 解方程:. =3

2{3[4(5x-1)-8]-20}-7=1; 5x﹣0.7=6.5﹣1.3x 3x﹣7(x﹣1)=3﹣2(x+3) 3x+7=32-2x 2(x﹣3)﹣(3x﹣1)=1

3x-7(x-1)=3-2(x+3) 7+

2(3x-5)-3(4x-3)=0 4-4(x-3)=2(9-x) ﹣=16. 参考答案 1.解:去分母得,18x+3(x﹣1)=18﹣2(2x﹣1), 去括号得,18x+3x﹣3=18﹣4x+2,移项得,18x+3x+4x=18+2+3, 合并同类项得,25x=23,系数化为1得,x=. 2.解:去分母得:2x﹣3(30﹣x)=60, 去括号得:2x﹣90+3x=60, 移项合并得:5x=150,

解得:x=30. 3.解:原方程化为,整理得12x=6.解得x=. 4. 5.x=5 6.x= 7.原方程可化为: 去分母, 得40x+60=5(18-18x)-3(15-30x), 去括号得40x+60=90-90x-45+90x, 移项, 合并得40x=-15, 系数化为1, 得x= 8. 9. 10. 11.解:,,,. 12.解:2{3[4(5x-1)-8]-20}-7=1, 2{3[20x-12]-20}-7=1, 2{60x-56}-7=1, 60x-56=4, 60x=60, x=1; 13.x=-4 14.x=1 15. 16.解:(1)移项得:5x+1.3x=6.5+0.7,合并同类项得:6.3x=7.2,化系数为1得:x=. 17.去括号得:3x﹣7x+7=3﹣2x﹣6,移项合并得:﹣3x=﹣10,解得:x=; 18. 19.去括号得:2x﹣6﹣3x+1=1,移项合并得:﹣x=6,解得:x=﹣6; 20.x=-1 21.解:,,,.

(完整版)初一数学上册一元一次方程100道

精心整理一百道题 3X+5X=4814X-8X=126*5+2X=44 20X-50=5028+6X=8832-22X=10 24-3X=310X*(5+1)=6099X=100-X 80y-90=7078y+2y=16088-x=80 9-4x=120x=4065y-30=100 51y-y=10085y+1=-8645x-50=40 10*+6=26*=224:8*=1*=3%8*+23=39*=2004*+9=21*=3 6:2*=3*=15%*-3=2*=1006×+8=68×=108:6×=1/3×=4 .x-3/0.5-x+4/0.2=1.6x=-9.2

2.2x/0.3+8/3-(1.4-3x)/0.2=2(x=1/5) 3.(4-6x)/0.01-6.5=(0.02-2x)/0.02-7.5(x=4/5) 4.x/0.7-(0.17-0.2x)/0.03=1(x=14/17)14.59+x-2 5.31=0 x=10.72 ②x-48.32+78.51=80 x=49.81 ③820-16x=45.5×8 ④(x- x=5 x=2 x=2x-2 x=32+3 2x=1+4 2x=x+1 3x=3=x 4x=4 x=56+4 x=2*1

2x=5*6 10x=1 5x=10 6x=7 10x=10 10=x+1 10=2x+1 10=3x+1 11=4x+1 31=12x+34 31=9x+1 31=9x+2 12=4x+1 12=2x+1 12=3x+1 12=5x+23 1=6x+123

12=12x+34 12=9x+1 12=9x+2 3X+5X=4814X-8X=126*5+2X=44 20X-50=5028+6X=8832-22X=10 24-3X=310X*(5+1)=6099X=100-X X+3=18X-6=1256-2X=20 80y-90=7078y+2y=16088-x=80 9-4x=120x=4065y-30=100 51y-y=10085y+1=-8645x-50=40 (x-2)12=8x x=6 初一数学上册一元一次方程应用题100道问题补充:

(完整版)七年级上解方程50道

七年级上解方程50道 (1)1153412 x x -=+; (2)70%x+(30-x)×55%=30×65%; (3)5(2)3(27)x x -=-. (4) 511241263x x x +--=+; (5)2(y -3)-6(2y -1)=-3(2-5y ) (6)5(2)3(27)x x -=-; (7)23-x -514+x =1. (8)()1322242x x ??---= ?? ?; (9)3(x-2)+1=x-(2x-1) (10) ()11432123x x +--=+. (11)3 7615=-y ; (17)615+x =819+x -31x - (12)5 12152x x x -=--+; (18)5(x+2)=2(2x+7); (13)14 126110312-+=+--x x x (19)2(x+0.5)-3(x -0.4)=5.6 (14)325(2)x x -=-+; (20)3(x+2)-2(x+2)=2x+4 (15)23 13512+=++-x x x (21)911z +72=92z -75 (16)2x +3=x -1 (22) 52-x -103+x -352-x +3=0 (23)2(10-0.5y)=-(1.5y+2) (29)()x 15400x 21003+=- (24) 15 1423=+--x x (30)1432312=---x x (25)05.035.22.04-=--x x (31)38316.036.13.02+=--x x x (26) 511241263x x x +--=+ (32)3(2x+5)=2(4x+3)-3 (27)5.702 .0202.05.21.0)32(2--=--x x (33)4y ﹣3(20﹣y)=6y ﹣7(9﹣y) (28)4x-3(x-20)=6x-7(9-x) (34)7(2x-1)-3(4x-1)=4(3x+2)-1 (35) 312x +=76 x + (41)2(x-2)-3(4x-1)=9(1-x) (36)(51)13(4-y)=14 (y+3) (42)15-(8-5x)=7x+(4-3x) (37)32x +=x-16x - (43)3(x-7)-2[9-4(2-x)]=22 (38)511241263 x x x +--=+; (44)120-4(x+5)=25

七年级上解方程道

七年级上解方程道

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七年级上解方程50道 (1)1153412x x - =+; (2)70%x+(30-x)×55%=30×65%; (3)5(2)3(27)x x -=-. (4) 511241263x x x +--=+; (5)2(y -3)-6(2y -1)=-3(2-5y );(6)5(2)3(27)x x -=-; (7) 23-x -514+x =1. (8)()1322242x x ??---= ???; (9)3(x-2)+1=x-(2x-1) (10) ()11432123 x x +--=+.

(11) 37615=-y ; (17)615+x =819+x -31x - (12) 512152x x x -=--+; (18)5(x+2)=2(2x+7); (13) 14 126110312-+=+--x x x (19)2(x+0.5)-3(x -0.4)=5.6 (14)325(2)x x -=-+; (20)3(x+2)-2(x+2)=2x+4 (15) 2313512+=++-x x x (21)911z +72=92z -75 (16)2x +3=x -1 (22) 52-x -103+x -3 52-x +3=0

(23)2(10-0.5y)=-(1.5y+2) (29)()x 15400x 21003+=- (24) 151423=+--x x (30)1432312=---x x (25) 05.035.22.04-=--x x (31)38316.036.13.02+=--x x x (26) 511241263x x x +--=+ (32)3(2x+5)=2(4x+3)-3 (27)5.702 .0202.05.21.0)32(2--=--x x (33)4y ﹣3(20﹣y)=6y ﹣7(9﹣y) (28)4x-3(x-20)=6x-7(9-x) (34)7(2x-1)-3(4x-1)=4(3x+2)-1

七上解一元一次方程100道练习题(有答案)

七上解一元一次方程100道练习题(有答案) 好的,以下是七年级上册解一元一次方程的100道练习题及答案: 1. 2x + 3 = 9 解:x = 3 2. 4x - 5 = 7 解:x = 3 3. 3x + 2 = 17 解:x = 5 4. 5x - 4 = 11 解:x = 3 5. 6x + 7 = 25 解:x = 3 6. 7x - 8 = 15 解:x = 3 7. 8x + 9 = 33 解:x = 3 8. 9x - 10 = 21 解:x = 3 9. 10x + 11 = 41 解:x = 3 10. 11x - 12 = 29 解:x = 3

11. 12x + 13 = 57 解:x = 4 12. 13x - 14 = 45 解:x = 4 13. 14x + 15 = 73 解:x = 4 14. 15x - 16 = 61 解:x = 4 15. 16x + 17 = 89 解:x = 4 16. 17x - 18 = 77 解:x = 4 17. 18x + 19 = 105 解:x = 4 18. 19x - 20 = 93 解:x = 4 19. 20x + 21 = 121 解:x = 5 20. 21x - 22 = 109 解:x = 5 21. 22x + 23 = 145 解:x = 5

22. 23x - 24 = 133 解:x = 5 23. 24x + 25 = 169 解:x = 5 24. 25x - 26 = 157 解:x = 5 25. 26x + 27 = 205 解:x = 6 26. 27x - 28 = 193 解:x = 6 27. 28x + 29 = 241 解:x = 6 28. 29x - 30 = 229 解:x = 6 29. 30x + 31 = 289 解:x = 6 30. 31x - 32 = 277 解:x = 6 31. 32x + 33 = 337 解:x = 6 32. 33x - 34 = 325 解:x = 6

初一数学上册一元一次方程100道

一百道题 3X+5X=48 14X-8X=12 6*5+2X=44 20X-50=50 28+6X=88 32-22X=10 24-3X=3 10X*(5+1)=60 99X=100-X X+3=18 X-6=12 56-2X=20 4y+2=6 x+32=76 3x+6=18 16+8x=40 2x-8=8 4x-3*9=29 8x-3x=105 x-6*5=42 x+5=7 2x+3=10 12x-9x=9 6x+18=48 56x-50x=30 5x=15 78-5x=28 32y-29=3 5x+5=15 89x-9=80 100-20x=20 55x-25x=60 76y-75=1 23y-23=23 4x-20=0 80y+20=100 53x-90=16 2x+9x=11 12y-12=24 80+5x=100 7x-8=6 65x+35=100 19y+y=40 25-5x=15 79y+y=80 42x+28x=140 3x-1=8 90y-90=90 80y-90=70 78y+2y=160 88-x=80 9-4x=1 20x=40 65y-30=100 51y-y=100 85y+1=-86 45x-50=40 10*+6=26 *=2 24:8*=1 *=3 %8*+23=39 *=200 4*+9=21 *=3 6:2*=3 *=1 5%*-3=2 *=100 6×+8=68 ×=10 8:6×=1/3 ×=4 .x-3/0.5-x+4/0.2=1.6 x=-9.2 2.2x/0.3+8/3-(1.4-3x)/0.2=2 (x=1/5) 3.(4-6x)/0.01-6.5=(0.02-2x)/0.02-7.5 (x=4/5) 4.x/0.7-(0.17-0.2x)/0.03=1 (x=14/17)14.59+x-2 5.31=0

初一数学解方程计算题及答案(100道)

初一数学解方程计算题及答案(100道) 一、一元一次方程 1. 2x + 3 = 5x - 7,x = 10 2. 6a - 8 = 10 + 2a,a = 3 3. 3b - 5 = 7 - 2b,b = 2 4. 4x + 9 = 25,x = 4 5. 5a - 7 = 23,a = 6 6. 7 - 3b = 22,b = -5 7. 2x - 8 = 14,x = 11 8. 4a + 12 = 36,a = 6 9. 5b - 3 = 22,b = 5 10. 3x - 4 = 17,x = 7 二、一元二次方程 11. x^2 + 4x + 3 = 0,x = -1 or -3 12. 3x^2 - 10x + 3 = 0,x = 1/3 or 3 13. 2x^2 + 7x + 3 = 0,x = -1/2 or -3 14. x^2 - 6x + 8 = 0,x = 2 or 4 15. 2x^2 - 11x + 5 = 0,x = 1/2 or 5/2 16. 3x^2 - 14x + 5 = 0,x = 1 or 5/3 17. x^2 + 5x + 4 = 0,x = -1 or -4 18. 2x^2 + 5x - 3 = 0,x = -1/2 or 3/2

19. x^2 - 2x + 1 = 0,x = 1 20. 4x^2 - 4x - 3 = 0,x = (2 + √7)/2 or (2 - √7)/2 三、分式方程 21. (x + 3)/5 - 3/4 = (x - 1)/10,x = -3/2 22. (2x + 3)/(x - 1) + 1/(x + 1) = 2,x = 2 23. (x + 2)/(x - 1) - (x - 1)/(x + 2) = (2x - 3)/(x^2 - 4),x = 1/2 or 7/3 24. 1/(x - 3) - 3/(2x + 1) = 1/(2x - 1),x = -5 or 7/4 25. (5x + 3)/(9x - 5) - (3x - 4)/(3 - x) = (4x^2 - 40)/(x^2 - 9x + 15),x = -2 or 2/3 四、绝对值方程 26. |x + 5| = 8,x = -13 or 3 27. |2x - 1| = 7,x = -3 or 4 28. |x - 2| = 1,x = 1 or 3 29. |3x + 4| = 13,x = -17/3 or 3 30. |x - 3| - 2 = 3x – 2,x = -1 or 13/7 五、分段函数方程 31. -3x + 2,x < 2;x + 1,x ≥ 2;x = 2 32. x + 2,x ≤ -2;-x + 7,-2 < x ≤ 3;-x + 4,x > 3;x = -2 or 3 33. 2x + 1,x < -2;x^2 + 2,-2 ≤ x < 1;-5x + 9,x ≥ 1;x = -2, -1/2, 1 34. -3,x ≤ -3;x + 2,-3 < x ≤ 0;-x^2 + 6x - 7,x > 0;x = -3 or 1, 5 35. -1,x ≤ -4;4 - x,-4 < x ≤ -1;-x^2 + 10x - 21,x > -1;x = -4 or 3, 7

七年级上解方程50道

七年级上解方程50道 (1)1153412x x - =+; (2)70%x+(30—x)×55%=30×65%; (3)5(2)3(27)x x -=-。 (4) 511241263x x x +--=+; (5)2(y -3)-6(2y -1)=-3(2-5y );(6)5(2)3(27)x x -=-; (7) 23-x -514+x =1。 (8)()1322242x x ⎛⎫---= ⎪⎝⎭; (9)3(x —2)+1=x-(2x-1) (10) ()11432123 x x +--=+。

(11) 37615=-y ; (17)615+x =819+x -31x - (12)5 12152x x x -=--+; (18)5(x+2)=2(2x+7); (13)1 41 26110312-+ =+--x x x (19)2(x+0.5)-3(x -0.4)=5。6 (14)325(2)x x -=-+; (20)3(x+2)—2(x+2)=2x+4 (15)231 3 512+=++-x x x (21)911z +72=92z -75 (16)2x +3=x -1 (22)52-x -103+x -352-x +3=0

(23)2(10-0。5y )=—(1。5y+2) (29)()x 15400x 21003+=- (24) 151423=+--x x (30)1432312=---x x (25) 05.035.22.04-=--x x (31)38316.036.13.02+=--x x x (26) 511241263x x x +--=+ (32)3(2x+5)=2(4x+3)-3 (27)5.702 .0202.05.21.0)32(2--=--x x (33)4y ﹣3(20﹣y)=6y ﹣7(9﹣y ) (28)4x —3(x —20)=6x-7(9—x ) (34)7(2x-1)—3(4x-1)=4(3x+2)—1

七年级上:一元一次方程50道练习题(含答案)

一元一次方程50道练习题〔含答案〕 〔1〕42 1 12+= +x x ; 〔2〕7.05.01.08.0-=-x x 〔3〕 x x x 2532421-+=-; 〔4〕6 7313x x += +; 〔5〕3 1632141+++=--x x x ; 〔6〕x x 23 32]2)121(32[23=-++ 〔7〕)33102(21)]31(311[2x x x x --=+-- 〔8〕)62(5 1)52(41)42(31)32(21+++=+++x x x x 〔9〕5x +2=7x -8; 〔10〕()()()01232143127=+-+---x x x 〔11〕3 7 615=-x ; 〔12〕 ()()()123 221211227 -=-+-y y y ;

〔13〕2162612-=+--x x ; 〔14〕()22123223=-⎥⎦ ⎤ ⎢⎣⎡--x x 〔15〕1212321321x x x =⎥⎦⎤⎢⎣ ⎡⎪⎭⎫ ⎝⎛--; 〔16〕123]8)4121(34[43+=--x x 〔17〕)96(328)2135(127--=--x x x 〔18〕2 96182+=--x x x 〔19〕x x x 52%25)100(%30)1(= ⨯-+⨯+; 〔20〕2435232-=+--x x x (21)153121314161=⎭ ⎬⎫ ⎩⎨⎧+⎥⎦⎤⎢⎣⎡+⎪⎭⎫ ⎝⎛-x 〔22〕2(2x-1)-4(4x-1)-5(2x+1)-19=0

〔23〕212644531313---+=+-x x x 〔24〕03 .002.003.02.05.01.05.09.04.0x x x += --+ 〔25〕3 22 12]2)14 1(32[23x x =-++ 〔26〕2{3[4(5x-1)-8]-20}-7=1 (27)2(0.3x-4)-5(0.2x+3)=9 (28)2[(x+3)-2(x+1)]-5=0 (29)3x-6 22 2163 )3(2--+-=+x x x (30)6.12 .0415 .03=+--x x (31)1}8]6)43 2(5 1[71{91=++++x (32)3x=2x+5 (33)2y+3=y -1

七年级上解方程50道

七年级上解方程50道 (1)115 3412 x x -=+; (2)70%x+(30-x)×55%=30×65%; (3)5(2)3(27)x x -=-. (4)51124 1263 x x x +--=+ ; (5)2(y -3)-6(2y -1)=-3(2-5y );(6)5(2)3(27)x x -=-; (7)23-x -514+x =1. (8)()1322242x x ⎛ ⎫---= ⎪⎝ ⎭; (9)3(x-2)+1=x-(2x-1) (10)()11 432123 x x +--= +.

(11)3 7615=-y ; (17)615+x =819+x -31x - (12)5 12152x x x -=--+; (18)5(x+2)=2(2x+7); (13)14 1 26110312-+=+--x x x (19)2(x+0.5)-3(x -0.4)=5.6 (14)325(2)x x -=-+; (20)3(x+2)-2(x+2)=2x+4 (15)23 13512+=++-x x x (21)911z +72=92z -75 (16)2x +3=x -1 (22)52-x -103+x -3 52-x +3=0

(23)2(10-0.5y)=-(1.5y+2) (29)()x 15400x 21003+=- (24)15 1423=+--x x (30)143 2312=---x x (25)05 .035.22.04-=--x x (31)38 316.036.13.02+= --x x x (26)51124 1263x x x +--=+ (32)3(2x+5)=2(4x+3)-3 (27) 5.702 .0202.05.21.0)32(2--=--x x (33)4y ﹣3(20﹣y)=6y ﹣7(9﹣y) (28)4x-3(x-20)=6x-7(9-x) (34)7(2x-1)-3(4x-1)=4(3x+2)-1

七年级上一元一次方程50道练习题(含答案)

七年级上一元一次方程50道练习题(含答案) https://www.sodocs.net/doc/2c19368614.html,work Information Technology Company.2020YEAR

一元一次方程50道练习题 (1)42 1 12+= +x x ; (2)7.05.01.08.0-=-x x (3)x x x 2532421-+=-; (4)6 7313x x += +; (5)3 1632141++ +=--x x x ; (6)x x 23 32]2)121(32[23=-++ (7))33102(21)]31(311[2x x x x --=+- -(8))62(5 1 )52(41)42(31)32(21+++=+++x x x x

(9)5x +2=7x -8; (10)()()()01232143127=+-+---x x x (11)3 7 615=-x ; (12) ()()()123 221211227 -=-+-y y y ; (13)2162612-=+--x x ; (14)()22123223=-⎥⎦ ⎤ ⎢⎣⎡--x x

(15)12 12321321x x x =⎥⎦⎤⎢⎣⎡⎪⎭⎫ ⎝⎛--; (16)123]8)4121(34[43+=--x x (17))96(328)2135(127--=--x x x (18)2 96182+=--x x x (19)x x x 52%25)100(%30)1(= ⨯-+⨯+; (20)2435232-=+--x x x

(21)153121314161=⎭⎬⎫ ⎩⎨⎧+⎥⎦⎤⎢⎣⎡+⎪⎭⎫ ⎝⎛-x (22)2(2x-1)-4(4x-1)-5(2x+1)-19=0 (23)212644531313---+=+-x x x (24)03 .002.003.02.05.01.05.09.04.0x x x += --+ (25)3 22 12]2)14 1(32[23x x =-++ (26)2{3[4(5x-1)-8]-20}-7=1 (27)2(0.3x-4)-5(0.2x+3)=9 (28)2[(x+3)-2(x+1)]-5=0

七年级上_一元一次方程50道练习题(含答案)

专业.专注 一元一次方程50道练习题(含答案) (1)42 1 12+= +x x ; (2)7.05.01.08.0-=-x x (3) x x x 2532421-+=-; (4)6 7313x x += +; (5)3 1632141+++=--x x x ; (6)x x 23 32]2)121(32[23=-++ (7))33102(21)]31(311[2x x x x --=+-- (8))62(5 1 )52(41)42(31)32(21+++=+++x x x x

专业.专注 (9)5x +2=7x -8; (10)()()()01232143127=+-+---x x x (11)3 7 615=-x ; (12) ()()()123 221211227 -=-+-y y y ; (13) 2162612-=+--x x ; (14)()22123223=-⎥⎦ ⎤ ⎢⎣⎡--x x

(15) 12 12321321x x x =⎥⎦⎤⎢⎣⎡⎪⎭⎫ ⎝⎛--; (16)123]8)4121(34[43+=--x x (17))96(328)2135(127--=--x x x (18)2 96182+=--x x x (19)x x x 52%25)100(%30)1(= ⨯-+⨯+; (20)2435232-=+--x x x

(21) 153121314161=⎭⎬⎫ ⎩⎨ ⎧+⎥⎦⎤⎢⎣⎡+⎪⎭⎫ ⎝ ⎛-x (22)2(2x-1)-4(4x-1)-5(2x+1)-19=0 (23)212644531313---+=+-x x x (24)03 .002.003.02.05.01.05.09.04.0x x x += --+ (25)3 22 12]2)14 1(32[23x x =-++ (26)2{3[4(5x-1)-8]-20}-7=1 (27)2(0.3x-4)-5(0.2x+3)=9 (28)2[(x+3)-2(x+1)]-5=0

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