The found value of x is 106°
We know that the measures of the sum of an inner triangle are equal to 180. So, to solve this question, we will just: add the like terms with equality equal to 180.
Finally, let's calculate as a first degree equation, just: isolating x and dividing both sides.
- (x + 10°) + 64° = 180
- x + 10° + 64° = 180
- x + 74° = 180°
- x = 180° - 74°
- x = 106°
Therefore, the answer will be x = 106°