SOLUTION: x+2y=4 3x-2y=4

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Question 75345: x+2y=4
3x-2y=4
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
X+2Y=4, X=-2Y+4
3X-2Y=4 NOW SUBSTITUTE (-2Y+4) FOR X & SOLVE FOR Y:
3(-2Y+4)-2Y=4
-6Y+12-2Y=4
-8Y=4-12
-8Y=-8
Y=-8/-8
Y=1 ANSWER.
X=-2*1+4
X=-2+4
X=2 ANSWER.
PROOF
3*2-2*1=4
6-2=4
4=4