Pre-Algebra Examples

 $\begin{array}{r} l = & 2 (1) + 1 \\ w = & 13 + 5 \end{array}$

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 $l = 2 (1) + 1$ and width $w = 13 + 5$ into the formula for the area of a rectangle.

$(2 (1) + 1) \cdot (13 + 5)$

Step 3

Multiply $2$ by $1$ .

$(2 + 1) \cdot (13 + 5)$

Step 4

Add $2$ and $1$ .

$3 \cdot (13 + 5)$

Step 5

Add $13$ and $5$ .

$3 \cdot 18$

Step 6

Multiply $3$ by $18$ .

$54$