Answer:
The value of x is 27°.
Step-by-step explanation:
Given that total angles inna triangle is 180°. In order to find the value of x, you have to add up all the expressiobs to form 180° :
(3x - 17)° + (x + 40)° + (2x - 5)° = 180°
6x + 18° = 180°
6x = 180° - 18°
6x = 162°
x = 162° ÷ 2
x = 27°
