简便计算:(6/7+3/4)+(2/7-4/11)-(3/4+7/11)
问题描述:
简便计算:(6/7+3/4)+(2/7-4/11)-(3/4+7/11)
我只会去括号.
答
(6/7+3/4)+(2/7-4/11)-(3/4+7/11)
=6/7+3/4+2/7-4/11-3/4-7/11
=(6/7+2/7)+(3/4-3/4)-(4/11+7/11)
=8/7+0-1
=1/7