① ② ③
1.5﹣0.9x=0.6 2x-= 5x+16.2=53.8
x÷0.8=1.25
2x-0.6x=2.8
60%x+14=32.6
5(x-2.8)=140
(x-140)÷70=4
24-3x=3
x-0.2x=32