In triangle ABC, angle A = p + 2q degrees, angle B = 6p - 5q degrees, and angle C = 14p + 8q degrees. Find p (in degrees) in terms of q.
p + 2q + 6p - 5q + 14p + 8q = 180 simplify
21p + 5q = 180
21p = [ 180 - 5q ]
p = [ 180 - 5q ] / 21
+269 
