Simplify: ab−c+bc−a+ca−b\frac{a}{b-c} + \frac{b}{c-a} + \frac{c}{a-b}b−ca+c−ab+a−bc where a+b+c=0a + b + c = 0a+b+c=0.
000
abcabcabc
−1-1−1
This cannot be simplified further