Pre-Algebra Examples

$(n + 8) + (n - 12)$

Step 1

Remove parentheses.

$n + 8 + n - 12$

Step 2

Add $n$ and $n$ .

$2 n + 8 - 12$

Step 3

Subtract $12$ from $8$ .

$2 n - 4$

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