一除以括号,1⼀12+1⼀13括回来等于多少?

2025-04-07 04:14:33
推荐回答(1个)
回答1:

解:1÷(1/12+1/13)
=1÷(13/156+12/156)
=1÷25/156
=1×156/25
=156/25
=6.24