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Solve by using the elimination method for 9x-9y equals 36 and 7y-3x equals -14?
Wiki User
∙ 13y ago
9x-9y = 36 => x-y = 4
3(-y+x = 4)
7y-3x = -14
Multiply all terms in the top equation by 3:
-3y+3x = 12
7y-3x = -14
Add both equations together:
4y = -2
Divide both sides by 4:
y = -0.5
Substitute the value of y into the original equations to find the value of x:
x = 3.5 and y = -0.5
Wiki User
∙ 13y ago
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4
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