(7/8 -1/4 ×5/8 )÷ 17/32用简算
问题描述:
(7/8 -1/4 ×5/8 )÷ 17/32用简算
答
(7/8 -1/4 ×5/8 )÷ 17/32
=7/8*32/17-1/4*5/8*32/17
=28/17-5/17
=23/17