SOLUTION: Use substitution to solve each system of equations. 1.y=x x+=6 2.x+y=0 y=3 3.y=-3x x+y=8

Algebra ->  Expressions-with-variables -> SOLUTION: Use substitution to solve each system of equations. 1.y=x x+=6 2.x+y=0 y=3 3.y=-3x x+y=8      Log On


   

Question 195589: Use substitution to solve each system of equations.
1.y=x
x+=6
2.x+y=0
y=3
3.y=-3x
x+y=8
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Use substitution to solve each system of equations.
1.y=x
x+=6
That makes no sense.
------------
2.x+y=0
y=3
--> x+3 = 0
x = -3
------------
3.y=-3x
x+y=8
x+(-3x) = 8
x-3x = 8
-2x = 8
x = -4