18/7-1/2除以1/4-3/4怎么简算?
问题描述:
18/7-1/2除以1/4-3/4怎么简算?
加油
答
(18/7-1/2)除以(1/4-3/4)
=(18/7-1/2)除以1/2
=(18/7-1/2)乘以2
=36/7-1
=29/7
=4又1/7