SOLUTION: x+y=9 x=2y solve with substitution method and can you give me the answer

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Question 701106: x+y=9 x=2y solve with substitution method and can you give me the answer
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
x%2By=9 ......eq. 1
x=2y...eq. 2......substitute in eq. 1

2y%2By=9...solve for y
3y=9
y=9%2F3
highlight%28y=3%29
now find x
x=2y....substitute y
x=2%2A3
highlight%28x=6%29