3.8*(2-3/4)-1 又1/4+(1+0.25)*7.2
问题描述:
3.8*(2-3/4)-1 又1/4+(1+0.25)*7.2
求答案要过程 在线等 有赏
答
=3.8*(5/4)-(5/4)+(5/4)*7.2
=(5/4)*(3.8-1+7.2)
=12.5