Calculate the perimeter of a rectangle if: its length is 12.1 cm and its width is 4.8 cm less.

We will solve this problem using the conditional variable “Y”, which is equal to the desired perimeter of the rectangle.

At the second step, using the conditions of the problem, we get the equation: Y = (12.1 + (12.1 – 4.8)) x 2.

As a result of solving the existing equation, we get Y = (12.1 + 7.3) x 2 = 19.4 x 2 = 38.8 centimeters.

Answer: The desired perimeter of the rectangle is 38.8 centimeters.