L=2w-5 P is 68 whats the width of the rectangle

Answer 1

Hello Travis E. Here is the solution, What you are looking for is the Perimeter of a rectangle P.

Formula is : P =2 (l + w)

P= 68

L= 2w-5

w=?

68 = 2 (2 w -5) +w

68 = 4 w -10 + w

68 = 4w -10 +w

-w -w

_______________________

68 = 3w -10

+10 +10

__________________________

78 = 3w

____ ____

3 3

26 = W

To find L:

68 = 2 ( L + 26)

68 = 2 L + 52

-52 -52

________________

16 =2 L

___ ___

2 2

8 = L

______________________________________________________

To Check : P =2 (L + W)

68 = 2 (8 + 26)

68 =2 (34)

68 = 68

Hope this helps !