You can put this solution on YOUR website! x+y= 10........eq 1
x-y= 2.........eq 2
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there is no formula...You are simply adding a system of equations together. This problem is perfectly set up for the y terms to be eliminated. When adding these equations together the x terms are added to the x terms , the y terms are added to the y terms and the constant is added to the constant
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so you would have x+x, which equals 2x: y-y=0(that is why they call it elimination) and 10+2, which =12
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so since the y terms are eliminated we are left with:
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2x=12
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take x's found value of 6 and plug it back into either equation. I choose eq 2
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6-y=2
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-y=-4
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solution(6,4)
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