oakiel21 oakiel21 14-09-2022 Mathematics Answered ∠A and \angle B∠B are supplementary angles. If m\angle A=(5x+30)^{\circ}∠A=(5x+30) ∘ and m\angle B=(x+30)^{\circ}∠B=(x+30) ∘ , then find the measure of \angle B∠B.