(5/12-3/5)-(2/5-7/12)简便计算急!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 23:15:59
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(5/12-3/5)-(2/5-7/12)简便计算急!
(5/12-3/5)-(2/5-7/12)简便计算
急!
(5/12-3/5)-(2/5-7/12)简便计算急!
5/12+7/12-3/5-2/5=1-1=0
(5/12-3/5)-(2/5-7/12)
=(5/12+7/12)-(3/5+2/5)
=1-1
=0
把括号去掉,再移项就行了。