Respuesta :

KurdishPotato

Answer:

30

Step-by-step explanation:

If A||B then the sum of given angles must be equal to 180°

2x + 50 + 5x - 80 = 180 add like terms

7x - 30 = 180 add 30 to both sides

7x = 210 divide both sides by 7

x = 30