(7/9+1/4-1/6)乘36等于多少(/=分数线)用简便方法.

问题描述:

(7/9+1/4-1/6)乘36等于多少(/=分数线)用简便方法.

(7/9+1/4-1/6)乘36
=7/9*36+1/4*36-1/6*36
=28+9-6
=31