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Modulus Function

Given, fx =...

Question

Given, $f (x) = 1 - 2 x$ ; find the value of $14 + x$ , if $f (x)$ is $15$ .

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Solution

Given, $f (x) = 1 - 2 x$
Also $f (x) = 15$
Therefore, $1 - 2 x = 15$
$\Rightarrow 1 - 15 = 2 x$
$\Rightarrow - 14 = 2 x$
$\Rightarrow x = - 7$

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