8÷3⼀5,7÷2⼀3 分别等于多少?

2024-11-19 03:31:01
推荐回答(2个)
回答1:

依次是40/3,21/2.

回答2:

3/5÷7/2+5/3×7/5
=(7/2÷7/5)+(3/5×5/3)
=(7/2×5/7)+(3/5×5/3)
=5/2+1
=7/2