Pre-Algebra Examples

$x - 9 = - 9$

Step 1

Add $9$ to both sides of the equation.

$x = - 9 + 9$

Step 2

Add $- 9$ and $9$ .

$x = 0$

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