SOLUTION: 6x − 3y = 18 6x + 3y = −12 Solve using substitution

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Question 601936: 6x − 3y = 18
6x + 3y = −12
Solve using substitution
Answer by flame8855(424) About Me  (Show Source):
You can put this solution on YOUR website!
6x − 3y = 18
6x + 3y = −12
2x-y=6
y=2x-6
6x+3y=-12
6x+3(2x-6)=-12
6x+6x-18=-12
12x=6
x=1/2
y=-5