# How do you solve x + 5 = 12?

Jun 7, 2018

$x = 7$

#### Explanation:

The key insight here is that we want to solve for $x$, and in doing so, we need to undo any operation being applied to it.

Right now, only $5$ is being added to it, so to solve for it, we need to do the inverse operation, subtraction.

Remember, we subtract $5$ from both sides to maintain the equality. We get

$\textcolor{p u r p \le}{x = 7}$

We can even plug in $7$ for $x$ to make sure our answer is reasonable:

$\textcolor{p u r p \le}{7} + 5 = 12$

$\implies 12 = 12$

This is true, so $x = 7$ is our solution.

Hope this helps!