Question 505726
x + y = -42
x - y = 52
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add the equations
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2x = 10
x = 5
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substitute x = 5
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5 + y = -42
y = -47
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Check your answer using the other equation.
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x -y = ?
5 -(-47) = 5+47 = 52
correct.
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Answer:  The two numbers are 5 and -47.
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Done.