Question 181816
x-2y=-1 .........eq 1
-x+5y=4 .........eq 2
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this is perfectly set up for addition(elimination is a better name in my opinion). We will be adding the terms of each equation together..the x terms with the x terms the y terms with the y terms....and constants with the constants. As you can see when you add the x terms they are eliminated because x-x=0. We are left with -2y+5y=-1+4
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3y=3
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{{{highlight(y=1)}}}
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now we take y's found value of 1 and plug it back into eq 1 or 2 and solve for x. I will use eq 1
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x-2(1)=-1
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{{{highlight(x=1)}}}
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solution to this system of equations is (1,1)
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