Solving Equations, algebra homework help

The world’s largest ice cream cake, made at the Baxy ice cream factory in Beijing, China, on January 16, 2006, had length 5.9 ft greater than its width:

Its perimeter was 51 ft. What were the length and width of this 8-ton cake? Use the formula , where w = width and l = length to solve this problem. Explain each step you took to arrive at your answer.