Verified answer

Perimeter: 2L + 2W = 18 ft or

L+W = 9

L + (L-7) = 9

2L = 16

L = 8 so,

W = (L-7) = 8-7 = 1 ft <=ANS

Perimeter=18

Perimeter=2L+2W

The width (W) is the length (L) minus 7:

W=L-7

Plug in W:

P=2L+2(L-7)

P=2L+2L-14

P=4L-14

Solve for L, knowing the perimeter is 18:

18=4L-14

32=4L

8=L

Plug the L back into the W equation:

W=L-7

W=8-7

W=1

So the width is 1. I hope this makes sense!

Width = x '

Length = ( x+7) '

Perimeter = 2 ( length + width )

18 = 2 ( x+7 + x)

9 = 2x +7

2x = 2

x = 1

ANSWER width = 1' length = 8'

L+L+(L-7)+(L-7)=4L-14

4L-14=P

4L-14=18

4L-14+14=18+14

4L=32

L= 8

W= L-7

W= 8-7

The width is 1 ft.

P = 2L + 2W

18 = 2L+ 2W

W= L-7

18= 2L+ 2w

-7= W-L ..multiply by two, and solve for L, plug L into equation to find W

Use system of equations, solve for L= 8 and W= 1....check 2(L) + 2(W) does equal 18

simple....its 2

P = 2L + 2W

18 = 2L+ 2W

9 = L + W

W=9 - L

then, W=2 if L=7