Question

化简|c-b|-|a-c|-|b-a|

|c-b|-|a-c|-|b-a|
c<0<b<a
|c|<|b|<|a|
周一之前一定要。跪求过程！

Answer 1

|c-b|-|a-c|-|b-a| =-c+b-a+c-a+b=2b-2a

Answer 2

c-b|-|a-c|-|b-a|=b-c-(a-c)-(a-b)=b-c-a+c-a+b=2b-2a;
c<0<b<a
|c|<|b|<|a|