SOLUTION: Solve the following systems by using the Addition/Elimination Method. -2x+y=2 and -x+3y=-4

Algebra ->  Linear-equations -> SOLUTION: Solve the following systems by using the Addition/Elimination Method. -2x+y=2 and -x+3y=-4      Log On


   

Question 887648: Solve the following systems by using the Addition/Elimination Method.
-2x+y=2 and -x+3y=-4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.-2x%2By=2++
2.+-x%2B3y=-4
Multiply eq. 2 by -2 and add to equation 1.
-2x%2By%2B2x-6y=2%2B8
-5y=10
highlight%28y=-2%29
Then,
-2x-2=2
-2x=4
highlight%28x=-2%29