3/5-1/12+2/5-7/12分数简便计算
问题描述:
3/5-1/12+2/5-7/12分数简便计算
答
解3/5-1/12+2/5-7/12
=3/5+2/5-1/12-7/12
=1-(1/12+7/12)
=1-8/12
=1-2/3
=1/3