14⼀13÷7+1⼀7×5⼀13-1⼀7×6⼀13用简便运算应该怎么做?

2024-11-16 16:43:21
推荐回答(1个)
回答1:

原式
=14/13×1/7+1/7×5/13-1/7×6/13
=1/7×(14/13+5/13-6/13)
=1/7×(19/13-6/13)
=1/7×1
=1/7