9分之4×【0.75-(16分之7-0.25)】能简便吗

2025-03-03 21:35:40
推荐回答(1个)
回答1:

4/9*[0.75-(7/16-0.25)]
=4/9*[3/4-(7/16-1/4)]
=4/9*[3/4-7/16+1/4]
=4/9*[1-7/16]
=4/9*9/16
=1/4