9*1.5+9.1/1.7-5*1.5+4.5/1.7 简便计算

问题描述:

9*1.5+9.1/1.7-5*1.5+4.5/1.7 简便计算

=1.5*(9-5)+(9.1+4.5)/1.7
=1.5*4+13.6/1.7
=6+8
=14