Question

Can someone help me on #6

Answer 1

A rectangle is 5 times as long as its width, meaning that length/5 = width
So the perimeter could also be stated as:
l + l +
`(1)/(5)`l +
`(1)/(5)`l

Answer 2

one of the ways you could do it would be 10d + 2d you just add both 5d's and both d's because they are common factors.