5.6乘3.3加5又5分之3乘7.7减5.6的简便运算急!
问题描述：
5.6乘3.3加5又5分之3乘7.7减5.6的简便运算急!
答
5.6x3.3+5又5分之3x7.7-5.6
=5.6x3.3+5.6x7.7-5.6
=5.6x(3.3+7.7-1)
=5.6x(11-1)
=5.6x10
=56