Question

(13) If the length of a rectangle in terms of x is 5x + 3x + 6 and its width is 7x + 9, what is the perimeter of this
rectangle?​

Answer 1

perimeter of rectangle= 2(l+b)=2(5x+3x+6+7x+9)

= 30x+30

Answer 2

Answer:

l = 5x+3x+6    b = 7x+9

Perimeter = 2(l+b)

                = 2(5x+3x+6+7x+9)

                = 2(15x+15)

                = 30x+30