Answer:
x = 16
Step-by-step explanation:
All angles in a triangle add up to 180°.
Step 1: Set up equation
9x - 8 + x + 10 + x + 2 = 180
Step 2: Solve for x
- Combine like terms: 11x + 4 = 180
- Subtract 4 on both sides: 11x = 176
- Divide both sides by 11: x = 16
