51又1/4乘4/5加71又1/6乘6/7等于多少?
问题描述:
51又1/4乘4/5加71又1/6乘6/7等于多少?
答
(51+1/4)*4/5 +(71+1/6) * 6/7
=50*4/5 + 5/4*4/5 + 70 *6/7 + 7/6*6/7
=40+1+60+1
=102