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OpenStudy (anonymous):
I need help finding the inverse of F(x)=5-8x/7x?
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OpenStudy (tkhunny):
Please work on your notation. You have written \[F(x) = 5 - \frac{8x}{7x}\] I'm guessing you intended \[F(x) = \frac{5-8x}{7x}\] which would be written F(x) = (5-8x)/(7x). The usual swap and solve. Where are you getting stuck? \[x = \frac{5-8y}{7y}\] Solve for 'y'.
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