Respuesta :

thaswasupbreh

Answer:

40

Step-by-step explanation:

x + (4x-20) = 180

5x - 20 = 180

5x = 200

x = 40

ekahvaz97

Answer:

the answer is 40

Step-by-step explanation:

the value of x and 4x -20 will be 180 degrees because it is a line and so you set the sum of those to 180 and solve for x