Answer:
By the math, x = 10°
Here's my issue though, the top angle is x - 15°. That would be an angle of -5° which is impossible.
Step-by-step explanation:
x - 15 + 2x + 25 + 180 - 4x = 180°
combine like terms:
3x - 4x + 190 = 180°
-x = -10°
x = 10°
