Please HELP WALK THROUGH?

Answer:
(360 - (124 + 124)) divided by 2 = 56
Step-by-step explanation:
Answer:
The answer would be 56.
Step-by-step explanation:
This angle is what you call a supplementary angle. These types of angles are 180°, so when met with an equation such as this, you simply want to subtract the angle provided from 180. Then you’ll be given your answer.
For example: 180 - 124 = x
x = 56