简便计算要过程:7分之6+11分之8+22分之5=
问题描述:
简便计算要过程:7分之6+11分之8+22分之5=
答
6/7+8/11+5/22
=6/7+(16+5)/22
=6/7+21/22
=(6*22+21*7)/154
=(132+147)/154
=279/154