M∠AOC m, angle, A, O, C is a straight angle. m∠AOB=8x+51∘\qquad m \angle AOB = 8x + 51^\circ m∠AOB=8x+51 ∘ m, angle, A, O, B, equals, 8, x, plus, 51, degrees m∠BOC=6x−25∘\qquad m \angle BOC = 6x - 25^\circ m∠BOC=6x−25 ∘ m, angle, B, O, C, equals, 6, x, minus, 25, degrees Find m∠AOBm\angle AOB m∠AOB m, angle, A, O, B :