计算a(/a-b+c)+(2a+2c/b-a-c)-(b+c/b-a-c)的结果为
问题描述:
计算a(/a-b+c)+(2a+2c/b-a-c)-(b+c/b-a-c)的结果为
答
计算
a(/a-b+c)+(2a+2c/b-a-c)-(b+c/b-a-c)
解,得:
==(a/a-b+c)-(2a+2c/a-b+c)+(b+c/a-b+c)
==(a-2a-2c+b+c)/(a-b+c)
==(-a+b-c)/(a-b+c)
==-(a-b+c)/(a-b+c)
==-1