SOLUTION: how do you solve for r-3s+t=4, 3r-6s+9t=5, and 4r-9s+10t=9?

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Question 358846: how do you solve for r-3s+t=4, 3r-6s+9t=5, and 4r-9s+10t=9?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
how do you solve for
r-3s+t=4,
3r-6s+9t=5,
4r-9s+10t=9
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Use any method you know to get:
r = -3
s = -2 1/3
t = 0
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Cheers,
Stan H.