# How do you solve for x in x+k/ j = 3/4 ?

Aug 11, 2017

See a solution process below:

#### Explanation:

Subtract $\textcolor{red}{\frac{k}{j}}$ from each side of the equation to solve for $x$:

$x + \frac{k}{j} - \textcolor{red}{\frac{k}{j}} = \frac{3}{4} - \textcolor{red}{\frac{k}{j}}$

$x + 0 = \frac{3}{4} - \frac{k}{j}$

$x = \frac{3}{4} - \frac{k}{j}$

If you need the right side of the equation over a common denominator then multiply each fraction by the appropriate form of $1$:

$x = \left(\frac{j}{j} \times \frac{3}{4}\right) - \left(\frac{4}{4} \times \frac{k}{j}\right)$

$x = \frac{3 j}{4 j} - \frac{4 k}{4 j}$

$x = \frac{3 j - 4 k}{4 j}$