I have memorized this question and I couldn't really get how I could figure it out. The question asks:
Its length is 5 times twice its width
The area is 7 square meters
Find the dimensions of this rectangle
I know its $l \times w \times h$... I don't know how I could use factoring to solve this.
Should I use gfc? Which factoring should I use? Please give me hints so I can figure out how to do this