You can
put this solution on YOUR website!The are of a rectangle is equal to its length multiplied by its width. We know the length is x, So we can write:

divide both sides by x:

Thats it!
I hope this helps.
P.S. I am trying to start up my own homework help website. I would be extremely grateful if you would e-mail me some feedback on the help you received to adam.chapman@student.manchester.ac.uk
Adam