Apply the distributive property.

Multiply by .

Subtract from both sides of the equation.

Add to both sides of the equation.

Add and .

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Simplify each term.

Cancel the common factor of and .

Factor out of .

Cancel the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Divide by .

Divide by .

Solve for l 2l+2(w-120)=1320