3⼀7+(2⼀3+1⼀7)+(1⼀3-1⼀5)-(4⼀5-4⼀7)简算等于多少?

2024-11-29 19:25:16
推荐回答(2个)
回答1:

3/7+(2/3+1/7)+(1/3-1/5)-(4/5-4/7)
=(3/7+1/7+4/7)+(2/3+1/3)-(1/5+4/5)
=8/7+1-1
=8/7
以上就是简便计算过程。

回答2:

3/7+(2/3+1/7)+(1/3-1/5)-(4/5-4/7)
=3/7+2/3+1/7+1/3-1/5-4/5+4/7
=3/7+1/7+4/7+2/3+1/3-1/5-4/5
=(3/7+1/7+4/7)+(2/3+1/3)-(1/5+4/5)
= 1+1-1
=1