(68分之1+51分之2)乘以17+17除以51 简便计算!

问题描述:

(68分之1+51分之2)乘以17+17除以51 简便计算!

(68分之1+51分之2)乘以17+17除以51
=17/68+2*17/51+17/51
=1/4+(2+1)*17/51
=1/4+3*1/3
=1又1/4