Step-by-step explanation:
So what you need to know is:
1) L= length and W= Width (for this problem)
2) Perimeter: 2(L+W)
3) L = W-36
So 1 and 2 are something you should know. 3 might be difficult in getting. It says that the length is 36 less than the width. This means you have to do subtraction in the problem. If it is 36 less then that means it would something minus 36. Our variable for width is W so it would be W-36.
Next, with the perimeter given and the L=W-36 given, we have to solve the equation.