The formula for the perimeter of a rectangle is P=2(l+w)P=2(l+w).

Question

Solve for w.

w=2P−lw=2P−l

w=p2−lw=p2−l

w=p−l2w=p−l2

w=P2+l

D?

Answer 1

P/2 = L+w

w = P/2 - L

Answer 2

nope. And where are your divide symbols?

P/2 = l+w

now go from there.