Pre-Algebra Examples

 $\begin{array}{r} l = & \frac{1}{2} x \\ w = & x \end{array}$

Step 1

The perimeter of a rectangle is equal to the sum of all sides of the rectangle.

$l e n g t h + l e n g t h + w i d t h + w i d t h = 2 \cdot (l e n g t h) + 2 \cdot (w i d t h)$

Step 2

Substitute the values of the length $l = \frac{1}{2}$ and width $w = x$ into the formula for the perimeter of a rectangle.

$2 \cdot \frac{1}{2} + 2 \cdot x$

Step 3

Cancel the common factor of $2$ .

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Step 3.1

Cancel the common factor.

$2 \cdot \frac{1}{2} + 2 \cdot x$

Step 3.2

Rewrite the expression.

$1 + 2 \cdot x$

$1 + 2 x \cdot x$