7⼀15÷4⼀45等于多少?

2024-12-31 23:33:14
推荐回答(2个)
回答1:

把除号换乘以后面分数的倒数。
7/15÷4/45
=7/15*45/4
=7*3/4
=21/4
=5.25

回答2:

7/15÷4/45
=7/15×45/4
=21/4
答:结果等于21/4