SOLUTION: use the subsitution method to solve the linear systems. 1) y=x+3 3x-y=5 2) 4x+y=9 y=-7 3) 3x=9 -2x+y=-8 4) x-2y=-13 y=-2x-6

Algebra ->  Expressions-with-variables -> SOLUTION: use the subsitution method to solve the linear systems. 1) y=x+3 3x-y=5 2) 4x+y=9 y=-7 3) 3x=9 -2x+y=-8 4) x-2y=-13 y=-2x-6      Log On


   

Question 705863: use the subsitution method to solve the linear systems.
1) y=x+3
3x-y=5
2) 4x+y=9
y=-7
3) 3x=9
-2x+y=-8
4) x-2y=-13
y=-2x-6
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
(1)y=7,,,x=4
(2)=========x=4,,,y==-7
(3)=========x=3,,,y=-2
(4)=========x=-5,,,y=4