SOLUTION: what is the substitution solution to x+y=3 and y=x+3

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Question 1002638: what is the substitution solution to x+y=3 and y=x+3
Answer by ikleyn(52784) About Me  (Show Source):
You can put this solution on YOUR website!
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You just have y expressed via  x  from the 2nd equation,  y = x + 3.
Substitute it into the first equation.  You will get

x + (x+3) = 3.

Hence,  2x = 0, x = 0.

Then  y = x+3 = 0+3 = 3.

Answer.  x = 0, y = 3.