SOLUTION: Use the elimination method to solve the system of equations. 5u+3v= -16, 2u+v= -7

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Question 511326: Use the elimination method to solve the system of equations. 5u+3v= -16, 2u+v= -7
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
5u+3v= -16
2u+v= -7
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multiply the second equation by 3 and then subtract
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5u +3v = -16
6u +3v = -21
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-u +0v = 5
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u = -5
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5(-5) + 3v = -16
-25 + 3v = -16
3v = 9
v = 3
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check using the second equation
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6u + 3v = ??
6(-5) + 3(3) = -30 +9 = -21
correct
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Answer u = -5, v = 3
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Done.