Question

计算下面各题就怎样简便就怎样算。三分之二加四分之一减十二分之五。

Answer 1

2/3+1/4-5/12
=（2*4+1*3-5*1）/12
=（8+3-5）/12
=6/12
=1/2

Answer 2

2/3+1/4-5/12
=8/12+3/12-5/12
=1/2

Answer 3

2/3+1/4-5/12＝8/12+3/12-5/12＝11/12-5/12＝6/12＝1/2