ABCD is a cyclic quadrilateral such that ∠A=(4y+20)°, ∠B(3y-5)°, ∠C=(4x)° and ∠D=(7x+5)°. . Find the four angles.

ABCD is a cyclic quadrilateral such that $∠ A = (4 y + 20) °, ∠ B (3 y - 5) °, ∠ C = (4 x) ° a n d ∠ D = (7 x + 5) ° .$ . Find the four angles.

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