用简便计算48*(5/6+5/8-5/12-7/16)

用简便计算48*(5/6+5/8-5/12-7/16)
用简便计算48*(5/6+5/8-5/12-7/16)

用简便计算48*(5/6+5/8-5/12-7/16)
48*(5/6+5/8-5/12-7/16)
=48*(5/6-5/12+5/8-7/16)
=48*(5/12+3/16)
=48*5/12+48+3/16
=20+9
=29

=48*（5/12+3/16）=20+9=29

48*(5/6+5/8-5/12-7/16)
=48*5/6+48*5/8-48*5/12-48*7/16
=40+30-20-21
=29

直接展开啊
48*(5/6+5/8-5/12-7/16)
=48*(5/6)+48*(5/8)-48*(5/12)-48*(7/16)
=40+30-20-21
=29