Question 764056
x = length
y = width
Perimeter:
2x + 2y = 46.....1
Length is 5ft longer than width
x = y + 5......2

2x + 2y = 46....1
x - y   = 5.....2
Multiply 2 by 2
2x + 2y = 46...1
2x - 2y = 10...3
Add (1) + (3)
4x      = 56
 x      = 14
Substitute x = 14 into (2)
x - y = 5
14 - y = 5
   - y = 5 - 14
   - y = - 9
     y = 9
x = 14
y = 9
Hope this helps
:-)