Determine the base of an isosceles triangle if its side is 1.3m less than the base and the perimeter is 4.6m.

The perimeter of a triangle is equal to the sum of all its sides. An isosceles triangle is a triangle whose sides are equal. We will solve the problem using an equation with one unknown.
1. The base of the triangle is x meters.
2. The side of the triangle is (x – 1.3) meters.
3. Let’s compose and solve the equation.
x + 2 * (x – 1.3) = 4.6;
x + 2x – 2.6 = 4.6;
x + 2x = 4.6 + 2.6;
3x = 7.2;
x = 2.4;
Answer: The base of the triangle is x = 2.4 centimeters.