Question 1005374
The sum of three numbers is -2. The sum of three times the first number, double the second number, and the third number is 9. The difference between the second number and half the third number is 10. Find the numbers. 
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Equations:
a + b + c = -2
3a + 2b + c = 9
b - (c/2) = 10
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Rearrange::
a + b + c = -2
3a + 2b + c = 9
0a + 2b - c = 20
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Use any method you know to get::
a = 3
b = 5
c = -10
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Cheers,
Stan H.
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