ah0376690 ah0376690 25-09-2020 Mathematics contestada ∠A and \angle B∠B are supplementary angles. If m\angle A=(7x+14)^{\circ}∠A=(7x+14) ∘ and m\angle B=(5x-26)^{\circ}∠B=(5x−26) ∘ , then find the measure of \angle B∠B.