SOLUTION: Solve the system of equation by substitution 5x + y = -4 and y = -x

Algebra ->  Equations -> SOLUTION: Solve the system of equation by substitution 5x + y = -4 and y = -x      Log On


   

Question 528878: Solve the system of equation by substitution

5x + y = -4 and y = -x
Answer by boilpoil(127) About Me  (Show Source):
You can put this solution on YOUR website!
This one is pretty easy:
5x+y=-4 and (y=-x)
5x+(-x)=4
5x-x=4
4x=4
x=1