Respuesta :

snog

Answer:

x = 9

Step-by-step explanation:

The perimeter of the first triangle is x + 3 + x + 3 + x + 3 = 3x + 9 and the perimeter of the second triangle is x + 3 + 2x - 3 + x = 4x. We know that the perimeters are equal, therefore, we can write the following equation:

3x + 9 = 4x

x = 9