Question 191194
Let x represent the measure of smallest angle, then 
another angle is x + 10.
the third one is 2x - 30.

As the sum of the measures of the three angles is 180 degrees, we have
x + x + 10 + 2x - 30 = 180
Solving for x, we have
4x - 20 = 180
4x = 200
x = 50
So
The smallest is 50
the other two are:
x+10 = 60
2x-30 = 100-30 = 70