# If f(x)=4x-5,find the value of x for which f(x)=19?

Apr 1, 2018

$x = 6$

#### Explanation:

Set $4 x - 5 = 19$ and solve for $x .$

$4 x - 5 = 19$

$4 x = 19 + 5$

$4 x = 24$

$x = \frac{24}{4}$

$x = 6$

Then, $f \left(6\right) = 19.$