SOLUTION: Please , Solve by substitution and check the answer as well x = 2y y = 2x + 3

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Question 369031: Please , Solve by substitution and check the answer as well
x = 2y
y = 2x + 3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.x+=+2y
2.+y+=+2x+%2B+3
Substitute eq. 1 into eq. 2,
y=2%282y%29%2B3
y=4y%2B3
-3y=3
highlight%28y=-1%29
Then from eq. 1,
x=2%28-1%29
highlight%28x=-2%29
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Check the answer by plugging the solutions back into the original equations.