1.9减1.9乘(1.9减1.9)的简便计算(要过程)
问题描述:
1.9减1.9乘(1.9减1.9)的简便计算(要过程)
答
1.9减1.9乘(1.9减1.9)
=1.9-1.9x0
=1.9-0
=1.9