x=880解析:60*0.8+(x÷0.88-60)*1.2=x60*4+(x÷0.88-60)*6=xx÷0.88-x=360-240x÷0.88-x=120x-0.88x=120*0.880.12x=120*0.88x=1000*0.88x=880
60×0.8+括号x÷0.88-60括弧乘以1.2=x60*0.8+1.2(x/0.88 -60)=x48+(15/11)x - 72 =x(4/11)x = 24x=66