(6/7+16/13+20/9)/(3/7+8/13+10/9)怎样简算?
问题描述:
(6/7+16/13+20/9)/(3/7+8/13+10/9)怎样简算?
答
两边同时乘以二,就能约掉了
(6/7+16/13+20/9)×2/(3/7+8/13+10/9)×2
=(6/7+16/13+20/9)×2/(6/7+16/13+20/9)
=2