The three angles of a triangle add up to 180 degrees. The largest angle is 5 times bigger than the smallest. The middle angle is 3 times bigger than the smallest. How many degrees is the smallest angle?
Stream of thoughts:
20
Let x be the smallest angle.

The combination of the three is x + 3x + 5x = 9x.

Thus 9x = 180.

So x = 20.

.

So, the final answer is 20