Question

The length of the base of an isosceles triangle is x. The length of a leg is 2x - 4. The perimeter of the triangle is 47. Find x.

Answer 1

x = 11

Explanation:

Remark

There are two legs. They are equal.

Equation

2x - 4 + 2x - 4 +x = 47 Combine like terms

Solution

5x - 8 = 47

5x - 8+8 = 47 + 8

5x = 55 Divide by 5

x = 11