(-0.875-7/24+7/4)*(-8/7)求答案

问题描述:

(-0.875-7/24+7/4)*(-8/7)求答案

-0.875=-7/8
(-0.875-7/24+7/4)*(-8/7)
=(-7/8)*(-8/7) - (7/24)*(-8/7) + (7/4)*(-8/7)
=1+1/3 - 2
=-2/3