4⼀12+7⼀13+5⼀12-6⼀13的过程?

2025-02-26 15:53:07
推荐回答(1个)
回答1:

4/12+7/13+5/12-6/13
=(4/12+5/12)+(7/13-6/13)
=9/12+1/13
=3/4+1/13
=39/52+4/52
=43/52