Question

The perimeter of a rectangle is 15x + 17y

If the length is x + 7y then find the width of the
rectangle.

Answer 1

6.5x+1.5y

Explanation:

Answer 2

w = 6.5x + 1.5y

Explanation:

Given a length l and width w, the perimeter of a rectangle is denoted by:

P = 2l + 2w

Here, we see that P = 15x + 17y, while l = x + 7y. Substitute these into the formula to solve for w in terms of x and y:

15x + 17y = 2 * (x + 7y) + 2w

15x + 17y = 2x + 14y + 2w

13x + 3y = 2w

w =
`(13)/(2) x+(3)/(2) y` = 6.5x + 1.5y

~ an aesthetics lover