$\"\"$

The perimeter and width of a rectangle is $\"\"$ and $\"\"$ respectively.

Write a formula to find the lenght $\"\"$ .

Perimeter of the rectangle is $\"\"$ .

$\"\"$ (Distributive property: $\"\"$ )

$\"\"$ (Subtract $\"\"$ from each side)

$\"\"$ (Apply additive inverse property : $\"\"$ )

$\"\"$ (Divide each side by $\"\"$ )

$\"\"$ (Cancel common terms)

Therefore,the lenght of the rectangle is $\"\"$ . $\"\"$

The lenght of the rectangle is $\"\"$ .