∠A=6x+5 ∘ start color #11accd, angle, A, equals, 6, x, plus, 5, degrees, end color #11accd ∠B=4x+45∘\qquad\green{\angle B=4x + 45^\circ} ∠B=4x+45 ∘ start color #28ae7b, angle, B, equals, 4, x, plus, 45, degrees, end color #28ae7b AA A BB B Solve for xx x x and then find the measure of ∠A\blueD{\angle A} ∠A start color #11accd, angle, A, end color #11accd :