Question

The length of each side of a square is increased by 2 inches. If the perimeter is 20 inches, write an equation to show the original length of the side

Answer 1

The new length side of the perimeter, we'll call p. The original length, we'll call o. P's equation looks like this:
$p = 20 \times \frac{1}{4}$
Since 5 is the length of one side, subtract 2 from 5 to get 3. The equation looks like this:
$o = \frac{20}{4} - 2$
or simply
$o = 5 - 2$