4×(2x-7)-2×(x+1)=3×(x-1)-8解几道方程
1.4×(2x-7)-2×(x+1)=3×(x-1)-8
2.(x/9)/(89-x)=4
3.5(0.2x+7)-2(0.3x-4)=47
4.0.4(x-0.2)+1.5=0.7x-0.38
5.(5(3x-8)-4(2x+3)=6(4x-4)-4