Example of equation

An example of an equation is:

$$2x + 5 = 11$$

This is a linear equation with one variable, $x$. To solve for $x$, you would subtract 5 from both sides:

$$2x = 11 - 5$$ $$2x = 6$$

Then, divide both sides by 2:

$$x = \frac{6}{2}$$ $$x = 3$$

So, the solution to the equation is $x=3$.