(5⼀12-3⼀5)-(2⼀5-7⼀12)简便计算

急急急!!!!
2025-04-15 14:27:18
推荐回答(3个)
回答1:

5/12+7/12-3/5-2/5=1-1=0

回答2:

把括号去掉,再移项就行了。

回答3:

(5/12-3/5)-(2/5-7/12)
=(5/12+7/12)-(3/5+2/5)
=1-1
=0