SOLUTION: Solve the system by addition. <pre> –5x + 2y = 10 x – 3y = 11 <pre>

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Question 70248: Solve the system by addition.
	–5x + 2y = 10
x – 3y = 11


Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
	–5x + 2y = 10
x – 3y = 11

Multiply the bottom equation by 5, this gives you 5x so it cancels with -5x
	–5x + 2y = 10
5(x – 3y = 11)

it then becomes
	–5x + 2y = 10
5x –15y = 55

Now individually add the terms 5x and -5x to get 0x. Then add 2y and -15y to get -13y, and finally 10 and 55 to get 65
	0x - 13y = 65 

Now you can solve for y
   
Divide both sides by -13
So y=-5. Now solve for x by plugging in y.

Add 10 to both sides
Simplify
Divide both sides by -5

So x=-4 and y=-5
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