简算:8/7*75%+0.75*6/7-3/4
问题描述:
简算:8/7*75%+0.75*6/7-3/4
答
8/7*75%+0.75*6/7-3/4
=8/7×3/4+3/4×6/7-3/4
=3/4×(8/7+6/7-1)
=3/4×1
=3/4