Pre-Algebra Examples

$x - 13 = - 4$

Step 1

Add $13$ to both sides of the equation.

$x = - 4 + 13$

Step 2

Add $- 4$ and $13$ .

$x = 9$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$