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# Ratios watch

1. Solve for the ratio x: y :z

2x + 3y - z = 0 (1)
3x - 2y + 4z = 0 (2)

I got x:y = -10:11, y:z = -11:5, x:z = -10:13

How do I get x: y :z?
2. ...

Your middle one is wrong: -11:5 is not true.

Should be -1013 overall (so your 1st and 3rd are ok).
4. The book says 10: -11: -13
Is that wrong?
5. That's the same (all you've done is multiply through by -1, but since we're dealing with ratios we can multiply through by any constant and it's still correct!)

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Updated: November 12, 2008
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