Respuesta :

norsch24

Answer:

x = 42.67

Step-by-step explanation:

x + 2x + 7 + 45 = (3 - 2) * 180

3x + 52 = 180

   - 52       - 52

3x = 128

/ 3    / 3

x = 42.67
Every triangle is equal to 180 so add 45 and the other number then subtract from 180 to get x