Pre-Algebra Examples

 $\begin{array}{r} l = & 12 x \\ w = & 4 x \end{array}$

Step 1

The area of a rectangle is equal to the length times the width.

$(l e n g t h) \cdot (w i d t h)$

Step 2

Substitute the values of the length $l = 12$ and width $w = 4$ into the formula for the area of a rectangle.

$12 \cdot 4$

Step 3

Multiply $12$ by $4$ .

$48 x^{2}$