\(ABCD\) is a cyclic quadrilateral. Compute the angles of the cyclic quadrilateral if \(\angle A = 4y + 52\), \(\angle B = 3y − 7\), \(\angle C = − 4x\) and \(\angle D = − 7x + 7\).
\(\angle A=\)\(^°\)
\(\angle B=\)\(^°\)
\(\angle C=\)\(^°\)
\(\angle D=\)\(^°\)