<PRE><B>Question 741837</B>
The formula for perimeter is: P = L + L + W + W  or P = 2L + 2W

Given: Perimeter=36 and L=2W+3

All we need to do is substitute this into the formula.

36=2(2W+3) + 2W
36=4W+6+2W   remove the parenthesis by distributing the 2
36=6W+6      collect like terms  (numbers with variables)
36-6=6W      collect like terms (numbers without variables)
30=6W        divide both sides by 6
5 = W

Since L = 2W + 3, then L = 2(5)+3 = 13</PRE>