七年级一元一次方程题
20%+(1-20%)(320-x)=320×40%
2(x-2)+2=x+1
2(x-2)-3(4x-1)=9(1-x)
x/3-5=(5-x)/2
2(x+1)/3=5(x+1)/6-1
(1/5)x+1=(2x+1)/4
(5-2)/2-(4+x)/3=1
x/3-1=(1-x)/2
(x-2)/2-(3x-2)/4=-1
11x+64-2x=100-9x
15-(8-5x)=7x+(4-3x)