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7(2x-1)-3(4x-1)=4(3x+2)-1 (5y+1)+ (1-y)= (9y+1)+ (1-3y)

20%+(1-20%)(320-x)=320×40% 2(x-2)+2=x+1
2(x-2)-3(4x-1)=9(1-x) －5=



11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x)
3(x-7)-2[9-4(2-x)]=22 ×[×（-1）-2]-x=2
2(x-2)-3(4x-1)=9(1-x) 2(x-2)+2=x+1
30x-10(10-x)=100 4(x+2)=5(x-2)

3(x-2)+1=x-(2x-1) 11x+64-2x=100-9x


3x+5(138-x)=540 3x-7(x-1)=3-2(x+3)
18x+3x-3=18-2(2x-1) 3(20-y)=6y-4(y-11)
0.4(x-0.2)+1.5=0.7x-0.38
0.4(x-0.2)+1.5=0.7x-0.38


3(x-7)-2{x+9-3-3[9-4(2-x)]}=22 |x-1|=5

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