Answer:
w= p-2l divided by 2 or w= p/2 -l. This is the letter l, not 1.
Explanation:
Subtract both sides by 2l to isolate for 2w. Then, you have 2w= p-2l. You have to make w to the lowest terms or make it a coefficient of one. To do that, you have to divide everything by 2. 2w divided 2 is w, p/2 is p/2, and length is -2l divided by 2 which is -l. You could also just leave it as 2l-p that whole expression gets divided by 2. Hope this helps!