1又5⼀17-(5⼀17+5⼀13+8⼀13)简便计算?

2024-12-03 15:35:48
推荐回答(1个)
回答1:

这道题用结合律来做,把同分母分数结合在一起就行了:1又5/17-(5/17+5/13+8/13)
=(1又5/17-5/17)-(5/13+8/13)
=1-1
=0