7⼀9×2⼀5÷7⼀9×2⼀2可以用简便方法计算吗?

2024-12-14 09:46:16
推荐回答(2个)
回答1:

7/9×2/5÷7/9×2/2
=7/9÷7/9×1×2/5
=1x1x2/5
=2/5
望采纳,谢谢

回答2:

=7/9×9/7×2/5×1
=1×2/5×1
=2/5