Martha made a rectangular blanket that had a perimeter of 18 feet it was 6 feet long how wide was it

3 ft

Step-by-step explanation:

Perimeter is

P = 2(l+w)

Substituting what we know

18 = 2(6+w)

Divide each side by 2

18/2 = 2(6+w)/2

9 = 6+w

Subtract 6 from each side

9-6 = 6+w-6

3 =w

idk

step-by-step explanation:

maybe try   if it is work from a book, if not try