1.

If \(\frac{x}{b+c}=\frac{y}{c+a}=\frac{z}{b-a}\), then which one of the following is correct?

A. x + y + z = 0
B. x - y - z = 0
C. x + y - z = 0
D. x + 2y + 3z = 0
Answer» C. x + y - z = 0


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