Question 576512
use the substitution method to solve the linear system. 
x-y = -5 
x+4 = 16
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x = y-5
Substitute for "x" and solve for "y":
y-5+4 = 16
y - 1 = 16
y = 17
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x = y-5
x = 17-5 = 12
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Cheers,
Stan H.
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