Let's call w the width and l the length.
The area of a rectangle is found by multiplying the length time the width, so:
w * l = Area
Additionally, the area of a rectangle is 56, so:
w * l = 56
Finally, the length of the rectangle is 7 cm longer than the width, so:
l = w + 7
w * l = 56
w * (w + 7) = 56
Therefore, the equation that you would set up to solve for the width is:
w(w+7) = 56
Answer: w(w+7)=56
