Answer
x = 71°
Step-by-step explanation
The sum of angles in a triuangle is 180°
So, we can sum these three angles up and equate them to 180°
x - 5° + x + x - 28° = 180°
3x - 33° = 180°
3x = 180° + 33°
3x = 213°
Divide both sides by 3
(3x/3) = (213°/3)
x = 71°
Hope this Helps!!!