SOLUTION: Please help me solve this equation by the substitution technique: y=x+9 3y-2x=29

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Question 814851: Please help me solve this equation by the substitution technique:
y=x+9
3y-2x=29
Found 2 solutions by richwmiller, erica65404:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3(x+9)-2x=29

Answer by erica65404(394) About Me  (Show Source):
You can put this solution on YOUR website!
y=x%2B9
3y-2x=29
since y is x+9 , you can replace the y in the 2nd equation with x+9.
3%28x%2B9%29-2x=29
3x%2B27-2x=29
x%2B27=29
x=2
now we can put 2 into the first equation.
y=2%2B9
y=11

The x value is 2 and the y value is 11.
The solution is (2,11). This is where the lines cross.