初一上册《一元一次方程》计算题.doc

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一元一次方程计算题
(1) 7(2x-1)-3(4x-1)=4(3x+2)-1;
(2) (5y+1)+ (1-y)= (9y+1)+ (1-3y);
(3) [ (1/4x-3)-4 ]=x+2;
(4) 20%+(1-20%)(320-x)=320 X 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) 2x-=15
(12) -(1-)x=80
(13) x/2+3x/2=7
(14) 3x+7=32-2x
(15) 3x+5(138-x)=540
(16) 3x-7(x-1)=3-2(x+3)
(17) 18x+3x-3=18-2(2x-1)
(19) -(x/4-1)=5
(18) 3(20-y)=6y-4(y-11)
3 (20) 3[4(5y-1)-8]=6
1
(21) x 2 3 - x；
4 4
(22) (x+ 1) - 3(x- 1)=1 - 3x;
(23) (x-2)- 2(4x- 1)=3(1 -x).
3x 1 4x 2 ,
1
(24) 2 5
宁(X 5)
(25) 5
x 3 x 3 x 4 x
x 4
(26) 3 6 ； ( 27)
(28) - [5(x 4) 5x 10] % x 2 ；
5 4
4k 3 (20—=t)x 7(.9 x) (2