一个数的倒数是2.4,这个数除七分之五的商是多少?

2025-06-29 12:46:12
推荐回答(2个)
回答1:

(1/2.4)/(5/7)=5/12X7/5=7/12

回答2:

1÷2·4÷5/7
=5/12x7/5
=7/12