(6/5+9/11+1又5/7)/(3/11+2/5+4/7)简便计算
问题描述:
(6/5+9/11+1又5/7)/(3/11+2/5+4/7)简便计算
答
(6/5+9/11+1又5/7)/(3/11+2/5+4/7)
= (9/11+6/5+12/7)/(3/11+2/5+4/7)
=3x(3/11+2/5+4/7)/(3/11+2/5+4/7)
=3