Question 1057602
1) 4x - y = 5
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2) 4x + 4y = -4 
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solve equation 2) for x
:
divide both sides of = by 4
:
x + y = -1
:
x = -y -1
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substitute for x in equation 1)
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4(-y -1) -y = 5
:
-4y -4 -y = 5
:
-5y = 9
:
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y = -9/5
x = 9/5 -5/5 = 4/5
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