Answer :
To solve for W, you have to get it by itself.
To do this, start with your formula,
A=LW
You have to divide both sides by L to get W by itself.
A/L = W
Now that the formula has been transformed, to A/L = W, here's the meaning:
If you divide A by L, you will get W. (If you divide Area by Length, you will get the width).