2x/5+60+(2x/5+60)*3*4-35=420
0.4x+60+12(0.4x+60)-35=420
0.4x+4.8x+720+25=420
5.2x=420-745
5.2x=-325
x=-325÷5.2
x=-62.5
2x/5+60+(2x/5+60)*3*4-35=420这个方程怎么解
2x/5+60+(2x/5+60)*3*4-35=420
0.4x+60+12(0.4x+60)-35=420
0.4x+4.8x+720+25=420
5.2x=420-745
5.2x=-325
x=-325÷5.2
x=-62.5