SOLUTION: y=2x x+y=12

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Question 10610: y=2x
x+y=12
Answer by rahman(247) About Me  (Show Source):
You can put this solution on YOUR website!
We be able to substitute y = 2x to x + y = 12:
x + y = 12 ----- x + 2x = 12
3x = 12
x = 12 : 3
x = 4
Then, y = 2x ------ y = 2(4) = 8
so, we find x = 4 and y = 8