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Answer:
∠ABC = 58°
Explanation:
Angle A is the difference between exterior angle AYZ and remote interior angle AXY of triangle AXY. Interior angle AXY is congruent with its vertical angle WXB, so we have ...
angle A = 119° -67° = 52°
Of course, the sum of angles A, B and C is 180°, so we have ...
∠ABC +∠ACB +∠A = 180°
∠ABC = 180° -52° -70°
∠ABC = 58°