If yb+c−a=zc+a−b=xa+b−c and x+y+z≠0, then which of the following hold true?

If yb+c−a=zc+a−b=xa+b−c and x+y+z≠0, then which of the follo

1.	If yb+c−a=zc+a−b=xa+b−c and x+y+z≠0, then which of the following hold true?
Answer» If $\frac{y}{b + c - a} = \frac{z}{c + a - b} = \frac{x}{a + b - c}$ and $x + y + z \neq 0$ , then which of the following hold true?