60x+50x=60(x+15)+40(x+15)帮忙解一下
问题描述:
60x+50x=60(x+15)+40(x+15)帮忙解一下
答
60x+50x=60(x+15)+40(x+15)
110x=60x+900+40x+600
110x=100x+1500
110x-100x=1500
10x=1500
x=150