SOLUTION: The sum of two numbers is -18.if four times the second number is less than three times the first number is 18. What is the sum of this numbers?

Question 780311: The sum of two numbers is -18.if four times the second number is less than three times the first number is 18. What is the sum of this numbers?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The sum of two numbers is -18.if four times the second number is less than three times the first number is 18. What is the sum of this numbers?
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Equations:
x + y = -18
4y - 3x = 18
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Modify for elimination:
3x + 3y = -54
-3x + 4y = 18
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Add and solve for "y":
7y = -36
y = -36/7
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Solve for "x"
x + y = -18
x - (36/7) = -126/7
x = -90/7
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Cheers,
Stan H.
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