SOLUTION: I'm using Substitution. My problem asks me to solve each system of linear equations. I'm not understanding how to eliminate a variable. Now this problem has double x and y. y

Algebra ->  Linear-equations -> SOLUTION: I'm using Substitution. My problem asks me to solve each system of linear equations. I'm not understanding how to eliminate a variable. Now this problem has double x and y. y      Log On


   

Question 159617: I'm using Substitution.
My problem asks me to solve each system of linear equations.
I'm not understanding how to eliminate a variable. Now this problem has double x and y.
y=-x-4
y=x+2
Please help!!
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
y=-x-4
y=x+2 subtract.
---------------------
0=-2x-6
2x-6
x=-6/2
x=-3 answer.
y=-(-3)-4
y=3-4
y=-1 answer.
Proof:
-1=-3+2
-1=-1