Respuesta :

The answer to the question is x=6
Space

Answer:

x = 6

Step-by-step explanation:

Since the sides are congruent (definition of isosceles triangle), the angles must also be congruent.

Step 1: Set up equation

4x + 20 = 8x - 4

Step 2: Solve for x

  1. Subtract 4x on both sides: 20 = 4x - 4
  2. Add 4 to both sides: 24 = 4x
  3. Divide both sides by 4: 6 = x
  4. Rewrite: x = 6