SOLUTION: Use the substitution method to solve the linear system. Show all work please. 3x=9 equation 1 -x+2y=9 equation 2

Algebra ->  Inequalities -> SOLUTION: Use the substitution method to solve the linear system. Show all work please. 3x=9 equation 1 -x+2y=9 equation 2      Log On


   

Question 190510: Use the substitution method to solve the linear system. Show all work please.
3x=9 equation 1
-x+2y=9 equation 2
Found 2 solutions by Alan3354, sheraj:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Use the substitution method to solve the linear system. Show all work please.
3x=9 equation 1 --> x = 3
-x+2y=9 equation 2
-3 + 2y = 9
2y = 12
y = 6

Answer by sheraj(2) About Me  (Show Source):
You can put this solution on YOUR website!
3x=9
x=9/3
x=3
-x+2y=9
2y=9+x
y=(9+x)/2
y=(9+3)/2=12/2=6
y=6
x=3