Question 502951
smallest angle =x
largest angle =2x
third angle = 2x-10

The sum of the angles of triangle = 180 deg

x+2x+2x-10=180
5x-10=180
5x=180+10
5x=190
x=38 deg
plug x 
2x=>2*38=76 deg
2x-10=> 76-10 = 66 deg
***

66+76+38=180 deg