The first thing you should know in this case is that the sum of the angles in a triangle is equal to 180 degrees.
Using the relationship between the angles, we find the following equation:
x + (6/2) x + (7/2) x = 180
From here, we clear x, which will be the smallest angle
x (1+ (6/2) + (7/2)) = 180
x = (180) / ((1+ (6/2) + (7/2))
x = 24
Answer:
x = 24 degrees
Option 4