3.7×1.1×3.7的简便运算

2025-06-28 21:44:52
推荐回答(2个)
回答1:

3.7乘以1.1加上3.7乘以1.1

回答2:

1/3+2/7-1/4 =28/84+24/84-21/84 =(28+24-21)/84 =31/84