7⼀9加上3⼀5除以7⼀9加上3⼀5怎样简便计算?

2024-11-18 02:58:17
推荐回答(1个)
回答1:

简便计算
7/9+3/5÷7/9+3/5
=7/9+27/35+3/5
=7/9+(27/35+3/5)
=7/9+48/35
=677/315