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Equation practice with angle addition

Given
mABD=87\qquad m \angle ABD = 87^\circ
mABC=9x1\qquad m \angle ABC = 9x - 1^\circ
mCBD=6x+58\qquad m \angle CBD = 6x + 58^\circ
Find mABCm\angle ABC:
{}^{\circ}