Question 698139: solve the system of linear equations using the elimination method.
x-2y=12
4x+2y=8 Found 2 solutions by unlockmath, Stitch:Answer by unlockmath(1688) (Show Source):
You can put this solution on YOUR website! Hello,
Let's add both of these:
x-2y=12
4x+2y=8
to get:
5x=20
Divide by 5:
x=4
Now we can solve for y:
y=-4
Make sense?
RJ
www.math-unlock.com
You can put this solution on YOUR website! Given:
&
Set both equations equal to zero
Notice that both equations contain a 2Y.
You need to multiply on of the equations by -1 to make the signs of the 2Y match
I choose the first one.
Since both equations equal zero, you can set the equations equal to each other.
Subtract 2Y from both sides
Add 8 to both sides
Add X to both sides
Divide both sides by 5
Now plug 4 into one of the equations for X and solve for Y
Add 2Y to both sides
Subtract 12 from both sides
Divide both sides by 2
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