Question

xin uses 20 yards of fencing to build the walls of a square chicken coop. which equation and solution represent x, the length, in yards, of each wall of the square coop?
$4x = 20$
$x = 80$
$4x = 20$
$x = 5$
$x + 4 = 20$
$x = 16$
$x + 4 = 20$
$x = 24$

Explanation:

Step1: Set up perimeter equation

A square has 4 equal sides. Total fencing (perimeter) is 20 yards, so $4x = 20$.

Step2: Solve for x

Divide both sides by 4: $x = \frac{20}{4} = 5$.

Answer:

$4x = 20$
$x = 5$