SOLUTION: What is the solution of the system? Use substitution. x = y + 2 8y = 7x - 9 z = 6x - 4y

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: What is the solution of the system? Use substitution. x = y + 2 8y = 7x - 9 z = 6x - 4y      Log On


   

Question 1148269: What is the solution of the system? Use substitution.
x = y + 2
8y = 7x - 9
z = 6x - 4y
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Use the first two equations to find x and y. Use these results to find z in the last equation. You see that first two equations do not contain z.

8y=7%28y%2B2%29-9
8y=7y%2B14-9
y=14-9
highlight%28y=5%29
-
x=y%2B2
x=5%2B2
highlight%28x=7%29
-
.
.