In triangle CDE, angle C = (4x - 16) degrees, angle D = (6x - 1) degrees, and angle E = (4x - 13) degrees. Find angle C.
angles in a triangle add up to 180 degrees
(4x - 16) + (6x - 1) + (4x - 13) = 180
14x - 30 = 180
14x = 210
x = 15
48 degrees