0.40×60+(x-60)×0.40×70%=0.36x 解方程的具体步骤,

0.40×60+(x-60)×0.40×70%=0.36x
0.40×60+0.28x-0.28×60=0.36x
0.36x-0.28x=(0.40-0.28)×60
0.08x=0.12x60
0.08x=7.2
x=90

0.40×60+(x-60)×0.40×70%=0.36x
0.40×60+0.28x-0.28×60=0.36x
0.36x-0.28x=(0.40-0.28)×60
x=0.12×60÷0.08
x=90

0.40×60+(x-60)×0.40×70%=0.36x
24+（x-60）*0.28=0.36x
24+0.28x-16.8=0.36x
7.2=0.08x
x=90