Respuesta :

Answer:

x = 25.2

<AFB = 158.4 degrees

<RST = 21.6 degrees

Step-by-step explanation:

7x-18+72-2x = 180

5x+54=180

5x= 126

x = 25.2

<AFB = 7(25.2)-18 = 158.4

<RST= 72-2(25.2) = 21.6