You can put this solution on YOUR website! x2-11xy-x=11y
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Assume you want y in terms of x:
x^2 - 11xy - x = 11y
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x^2 - x = 11xy + 11y; added 11xy to both sides
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x(x-1) = 11y(x+1); factor out the common terms
: = 11y; divided both sides by (x+1)
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y = ; divided both sides by 11