5⼀12×(4⼀15÷2⼀5)-3⼀5

怎样简便运算?
2025-03-18 03:05:09
推荐回答(2个)
回答1:

5/12×(4/15÷2/5)-3/5
=5/12×4/15×5/2-3/5
=5/12×2/3-3/5
=5/18-3/5
=25/90-54/90
=-29/90
=-90分之29

回答2:

除法转化为乘法

去括号演算,

结果为-29/90,

详细过程请见图片,望采纳,谢谢了