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OpenStudy (anonymous):
Solve the following system of equations for y: 2x+y=12 -2x+3y=-4 a)8 b)2 c)3 d)4
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OpenStudy (anonymous):
Add the first equation to the second one, you get \(4y=8\) implies that \(y=2\).
OpenStudy (anonymous):
add first equation to the second: 4y=8 solve for y: y=8/4=2 now, substitute value of y in any given equation: 2x+2=12 2x=10 x=5 so, your answer: (5,2)... Actually, you need ONLY value of y = 2
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