The perimeter of an isosceles triangle is 42 cm, the lateral side is 6 cm larger than the base. Find the sides of the triangle.

The solution of the problem:
1. Let’s denote the side of the triangle by x centimeters.
2. Find out what the base of the triangle is equal to.
(x-6) centimeters.
3. Let’s compose and solve the equation.
x + x + (x-6) = 42.
x + x + x-6 = 42.
x + x + x = 42 + 6.
3x = 48.
x = 48/3.
x = 16.
4. The side of the triangle is x = 16 centimeters.
5. Find out what the base of the triangle is equal to.
x-6 = 16-6 = 10 centimeters.
Answer: One side of the triangle is sixteen centimeters, the other side is sixteen centimeters, the third side is ten centimeters.