All sides of the triangle are 12 cm long, each side has been reduced by 2 cm.

All sides of the triangle are 12 cm long, each side has been reduced by 2 cm. Find the perimeter of the resulting triangle.

To solve this problem, we introduce the conditional variable “X”, through which we denote the perimeter of the new triangle.

The first step is to determine the length of the side of the new triangle.

As a result, we get 12 – 2 = 10 centimeters.

Then, based on the data of the problem, we will compose the following equation: X = 10 + 10 + 10.

Solving this equation, we get X equal to 30 centimeters.

Answer: The perimeter of the triangle is 30 centimeters.