Question

The perimeter of a rectangle is 42cm. The length is xcm. The width is 3cm shorter than the length. What is x?

Answer 1

Answer:

Here's your answer in the pic

Answer 2

Answer:

here length = X cm and breadth = x- 3 cm

perimeter = 2( l+b).

so, 42= 2( x+ x- 3)

21= 2x- 6

27= 2x

x=13.5cm