2/3减(5/6减3/4)加5/12计算,
问题描述:
2/3减(5/6减3/4)加5/12计算,
答
2/3-(5/6-3/4)+5/12
=2/3-(10/12-9/12)+5/12
=2/3-1/12+5/12
=2/3+4/12(4/12=1/3)
=1