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Angles are a, b, c,

a + b + c = 180

a = 3b

c = b + 65

Substitution

3b + b + b + 65 = 180

5b + 65 = 180

5b = 115

b = 23

EDIT: deleted the last part of the answer cuz yall know why

One angle of a triangle is three times as large as another. The measure of the third angle is 65 more than the smallest angle. What are the measures of each angle?

(180-65) /5 = 23        angles are:  69,   23,  and 88