A rectangle has a perimeter of 42 inches. The width of the rectangle is 3 inches less than

Question

1/2 the length. What are the dimensions of this​ rectangle?
Write your answer in the form​ "width, length

Answer 1

length ---- x
width ---- (1/2)x - 3

2( x + x/2 - 3) = 42
x + x/2 - 3 = 21
(3/2)x = 24
x = 24(2/3) = 16

the length is 16
the with = (1/2)(16) - 3 = 5

check:
2(5) + 2(16) = 42
my answer is correct

Answer 2

The length of a rectangle is 3 inches less than twice its width. If the perimeter of the rectangle is 42 inches, find the dimensions of the rectangle.