Question #44e18

Oct 18, 2017

$4 x - 5 = 15$, solving for $x = 5$.

Explanation:

We need to isolate the variable $x$.

By doing this, we can add $\left(+ 5\right)$ on both sides.

$4 x - 5 + 5 = 15 + 5$

$4 x = 20$

Then, we divide both sides by $4$ (the coefficient of $x$ in order to isolate $x$)

$\frac{4 x}{4} = \frac{20}{4}$

$x = 5$

Thus

$x = 5$