Question 302784
66=P
P=2L+2W
W=(3+L)
{{{66=2L+2(3+L)}}} distribute the 2
{{{66=2L+6+2L)}}} add like terms and subtract 6 from both sides
{{{60=4L)}}} divide by 4
{{{15=L)}}}
{{{W=(3+L)}}}
{{{W=(3+15)}}}
{{{W=18}}}