Problem: 4x+7y=60 -4x+7y=-4
Enter your answer as a ordered pair.
1) 4x + 7y = 60
2) -4x + 7y = -4
Add the equations, to eliminate the x term.
4x + 7y = 60
-4x + 7y = -4
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14y = 56
14y = 56
y = 4
Plug that into equation 1 to solve for x.
4x + 7y = 60
4x + 7(4) = 60
4x + 28 = 60
4x = 32
x = 8
Answer: (8, 4)