SOLUTION: How do you solve this using substitution? y = 2x + 9 y = x + 6

Algebra ->  Linear-equations -> SOLUTION: How do you solve this using substitution? y = 2x + 9 y = x + 6      Log On


   

Question 714561: How do you solve this using substitution?
y = 2x + 9
y = x + 6
Answer by Dionysus10474(5) About Me  (Show Source):
You can put this solution on YOUR website!
Because y is equal to y you get:
2x + 9 = x + 6
take x to the left
x + 9 = 6
take the 9 to the right
x = 6 - 9
and voila
x = -3