# How do you solve \sqrt { 5x - 9} - 9= 0?

Oct 15, 2016

$x = 18$

#### Explanation:

Making $5 x - 9 = {9}^{2}$ we have

$9 - 9 = 0$ so

$x = \frac{{9}^{2} + 9}{5} = \frac{90}{5} = 18$

Oct 15, 2016

$\sqrt{5 x - 9} - 9 = 0$
$\sqrt{5 x - 9} = 9$
$5 x - 9 = 81$
$5 x = 81 + 9 = 90$
$x = \frac{90}{5} = 18$