计算,12+5/6x(5/4-3/1)

问题描述:

计算,12+5/6x(5/4-3/1)

12+5/6x(5/4-3/1)
=12+5/6x(5/4-12/4)
=12+5/6x(-7/4)
=12-35/24
=288/24-35/24
=233/24