Question 720834
What is the solution set of the following system of equations? 
5x - 3y - 10 = 0 
x + y - 7 = 0
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Rearrange:
5x - 3y = 10
5x + 5y = 35
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Subtract to solve for "y":
2y = 45
y = 45/2
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Solve for "x" using x + y = 7
x + 22.5 = 7
x = -15.5 = -31/2

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Cheers,
Stan H.
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The answer has to be one of the following, 

1. {(31/8, 25/8)}
2. {(25/8, 31/8)}
3. {(45/2, 31/2)}
4. {(-31/2, 45/2)}