18⼀7乘以25⼀13乘以25⼀7乘以18⼀5简便计算

2025-03-10 23:24:21
推荐回答(1个)
回答1:

18/7×25/13+25/7×18/5
=18/7×25/13+25/5×18/7
=18/7×(25/13+25/5)
=18/7×25/18
=25/7