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OpenStudy (anonymous):
4x+3y=-20 -4x+y=36
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OpenStudy (anonymous):
y = 4
OpenStudy (anonymous):
x = -8
OpenStudy (anonymous):
If you add the two equations, the x's cancel. This leaves you with 4y = 16, so y = 4. Plug 4 for y into either equation to solve for x.
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