Question

Help with number 19. please

Answer 1

The perimeter is 16x - 4 units.

Explanation:

See the attached worksheet. The perimeter of a rectangle is the sum of it's four sides. That adds to 16x - 4 units.

Answer 2

16x - 4

Explanation:

Framing an expression:

To find the perimeter of the rectangle, add all the sides.

`\boxed{\text{\bf Perimeter of rectangle = sum of all sides}}`

= 7x + 1 + x - 3 + 7x + 1 + x - 3

Combine like terms. Like terms have same variable with same power. Here, 7x,7x ,x, x are the like terms and 1 , (-3),1, (-3) are constants.

= 7x + x + 7x + x + 1 - 3 +1 - 3

= 16x - 4