Question 526322
Length (l): 5+2w
Width (w): w
Perimeter formula: 2l+2w
Perimeter = 76
  so...
To Find The Width...
76 = 2(2w+5)+2w
76 = 4w+10+2w
76 = 6w+10
66 = 6w
11 = w

To Find The Length Plug In The w Value
length = 5+2w
length = 5+2(11)
length = 27