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put this solution on YOUR website!f(x)=

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y = f(x)
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y =

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Swap y for x, solve for y

= x
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5y - 3 = x(2y + 1); multiply both sides by (2y+1)
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5y - 3 = 2xy + x; subtract 2 xy from both side
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5y - 2xy = x + 3; add 3 to both sides
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y(5 - 2x) = x + 3; divide both sides by (5-2x)
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y =

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f-1(x) =