# How do you solve for p: 2(p + 2) = r?

Jan 16, 2016

When solving for a variable in a formula, the variable in question has to be completely alone, with a coefficient of 1.

#### Explanation:

2(p + 2) = r
2p + 4 = r
2p = r - 4
p = $\frac{r - 4}{2}$

So, p = $\frac{r - 4}{2}$.

Here is one more complicated question for your practice:

Solve for x in the following equation:

$\frac{2 x + 9}{4 h}$ = $\frac{3 x - 5}{3 h}$

Feel free to ask how to do this one should you run into troubles.

Enjoy, and best of luck!