One side of the rectangle is 14 cm smaller than the other, and the sum of the sides is 42 cm.

One side of the rectangle is 14 cm smaller than the other, and the sum of the sides is 42 cm. Find the Sides of the rectangle.

Let x be the length of one side of the rectangle, then since the second side of the rectangle is 14 cm less than the other, then the length of the second side is x – 14. The sum of the sides is 42 cm, so we can write: x + x – 14 = 42. To solve the equation, we transfer to one part is all the unknown terms of the equation, and the other is all the known terms of the equation. We get the following: 2x = 42 + 14, 2x = 36, x = 36: 2, x = 18 cm. The length of one side of the rectangle is 18 cm, then the length of the second side of the rectangle is 18 cm – 14 cm = 4 cm.