What is the inverse of f(x)=(x+20)/(x-18) ?

The inverse of f(x)=(x+20)/(x-18) is (20+18x)/(x-1)

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inverse of f(x)=(x+20)/(x-18)

inverse

f (x) = \frac{x + 20}{x - 18}

\frac{20 + 18 x}{x - 1}

Solution steps

y = \frac{x + 20}{x - 18}

Replace

x

with

y

x = \frac{y + 20}{y - 18}

Solve for

y, x = \frac{y + 20}{y - 18}

\frac{20 + 18 x}{x - 1}

x + 4 y = 20

f (x) = (x + 1)^{3} + 2

x - 2 y = 11

f (x) = 2 - x

h (x) = 3 x - 12

What is the inverse of f(x)=(x+20)/(x-18) ?
The inverse of f(x)=(x+20)/(x-18) is (20+18x)/(x-1)