17.5*67+17.5*34-17.5简算
问题描述:
17.5*67+17.5*34-17.5简算
答
17.5*(67+34-1)=17.5*100=1750
答
17.5*67+17.5*34-17.5
=17.5*(67+34-1)
=17.5*100
=1750