求36*12/7-36/1.4的简便算法.

问题描述:

求36*12/7-36/1.4的简便算法.

36*12/7-36/1.4
=36*(12/7-1.4)
=36*(12/7-7/5)
=36*(11/35)
=(35+1)(11/35)
=11+11/35
=11又11/35