SOLUTION: how can i solve this equation by substitution: x+2y=7 y=3x

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Question 32047: how can i solve this equation by substitution:
x+2y=7
y=3x
Answer by mukhopadhyay(490) About Me  (Show Source):
You can put this solution on YOUR website!
y=3x
Substitute the value of y in the equation x+2y=7.
So, x+2(3x) = 7
=>7x=7
=>x=1
y=3x=>y=3
Answer: x=1 and y=3