13又7⼀13-(4又1⼀4+3又7⼀13)-0.75要过程

2025-02-27 14:30:34
推荐回答(1个)
回答1:

先去括号13又7/13-4又1/4-3又7/13-3/4
=13又7/13-3又7/13-17/4-3/4
=10-7/2
=6.5或13/2