怎样简便就怎样算:(5⼀7-1⼀14+5⼀6)÷5⼀42

2025-01-05 10:32:25
推荐回答(2个)
回答1:

解:
(5/7-1/14+5/6)÷5/42
=(5/7-1/14+5/6)x42/5
=5/7x42/5-1/14x42/5+5/6x42/5
=6-3/5+7
=13-3/5
=12又2/5

回答2:

=(10/14-1/14+5/6)×42/5
=(27/42+35/42)×42/5
=62/42×42/5
=62/5
=12.4