七分之五乘以八分之五+七分之二乘以0.625 怎么算

问题描述:

七分之五乘以八分之五+七分之二乘以0.625 怎么算

七分之五乘以八分之五+七分之二乘以0.625
=七分之五乘以0.625+七分之二乘以0.625
=(七分之五+七分之二)乘以0.625
=1乘以0.625
=0.625