What is the largest angle?

Question

One angle in a triangle has a measure that is three times as large as the smallest angle. The measure of the third angle is 15 degrees more than that of the smallest angle. Find the measure of the LARGEST angle.

Answer 1

x is the smallest angle

the other angle is 3x

the 3rd angle is x+15

x+3x+x+15 = 180

5x+15 = 180

5x = 165

x=33

the angles are 33, 99, and 48