4⼀9霧1⼀17+19X4⼀9简便方法?

2024-12-01 15:54:56
推荐回答(2个)
回答1:

4/9÷1/17 +19×4/9
=4/9×17 +19×4/9
=4/9×(17+19)
=4/9×36
=16

回答2:

4/9 ÷1/17+19 ×4/9
=4/9 ×17+19 ×4/9
=4/9 × (17+19)
=4/9 ×36
=16