Solve for x.
Don’t mind the mouse, it’s not included in the equation.

Answer:
Step-by-step explanation:
inside angle = 180
180 = x - 4 + 2x + 10 + (180 - 153)
180 + 4 - 10 - 27 = 3x
147 = 3x
x = 147 / 3
x = 49