A rectangle has a perimeter of 42 inches its width is 8 inches how much longer is the length than the width

5

Step-by-step explanation:

42-16 because 8+8 = 16 and there are 2 widths on a rectangle, then you get 26. Next you do 26/2 and get 13 so that is the length. And you want to know how much longer the length is compared to the the width, so 13-8=5.

5 inches longer

Step-by-step explanation:

42=2 (8+x)

x=13

13-8=5 inches

5 inches longer