(1) 7(2x-1)-3(4x-1)=4(3x+2)-1;
(4) 20%+(1-20%)(320-x)=320
X40%
(8) 15-(8-5x)=7x+(4-3x)
(12) -(1-)x=80
(16) 3x-7(x-1)=3-2(x+3)
(20) 3[4(5y-1)-8]=6
(23) (x -2) — 2(4x — 1)=3(1
解一元一次方程计算题专练
(2) (5y+1)+ (1-y尸
⑸ 2(x-2)+2=x+1
(9) 3(x-7)-2[9-4(2-x)]=22
(13)
(17)
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x/2+3x/2=7
(14)
18x+3x-3=18-2(2x-1)
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(24) 2
(9y+1)+ (1-3y);
(6) 2(x-2)-3(4x-1)=9(1-x)
(10) 3/2[2/3(1/4x-1)-2]-x=2
3x+7=32-2x
(3)
[(1/4x-3)-4 ]=x+2;
⑺ 11x+64-2x=100-9x
(11) 2x-=15
(15) 3x+5(138-x)=540
(18) 3(20-y)=6y-4(y-11)
(19) -(x/4-1)=5
(22)
(x+1) —3(x—1)=1 —3x;
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x 4
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(25) 5
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