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if you are solving systems of equations and your solving for y how do you get rid of the x

 Feb 24, 2016
 #1
avatar+5265 
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What is/are the equation/equations? You can use substitution, elimination, and one that I can't remember... I think there were three ways, weren't there?

 Feb 24, 2016
 #2
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um.. ya i think there is three burt idk we just started doing this but the equations are y= -3/2x +3, and y= -x +6

 Feb 24, 2016
 #4
avatar+5265 
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Let's try doing substitution. 

 

Since y equals both -3/2x+3 and -x+6, let's set them equal to each other.

 

Set the equations equal to each other.

 

-3/2 x+3=-x+6

 

Add 3/2 x to both sides.

 

3=1/2x+6

 

Subtract 6 from both sides.

 

1/2x=-3

 

Multiply by 2 on both sides.

 

x=-6

 

Check your answer:

 

-3/2(-6)+3=-(-6)+6

 

9+3=6+6

 

12=12 The answer is correct!

rarinstraw1195  Feb 24, 2016
 #3
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um.. ya i think there is three burt idk we just started doing this but the equations are y= -3/2x +3, and y= -x +6

 Feb 24, 2016

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