Pre-Algebra Examples

$x + 7 = 28$

Step 1

Subtract $7$ from both sides of the equation.

$x = 28 - 7$

Step 2

Subtract $7$ from $28$ .

$x = 21$

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