(22*33+33*44)/(55*66+66*77) 简便计算
问题描述:
(22*33+33*44)/(55*66+66*77) 简便计算
答
(22×33+33×44)/(55×66+66×77)
=[33×(22+44)]/[66×(55+77)]
=(33×66)/(66×132)
=33/132
=1/4
请点击下面的【选为满意回答】按钮.1/4是等于一除以四,还是四分之一4分之1