简便计算:[1⼀3+(1⼀2+3⼀5)]霧7⼀10

2024-12-04 10:14:26
推荐回答(3个)
回答1:

回答2:

回答3:

[1/3+(1/2+3/5)]➗7/10
=(1/3+11/10)x 10/7
=1/3×10/7+11/10×10/7
=10/21+11/7
=43/21