The systems of difference equationsxn+1 =unvn?2 + aun + vn?2, yn+1 =wnsn?2 + awn + sn?2, n ∈ N0,where a, u0, w0, vj,sjj = ?2, ?1, 0, are complex numbers, and the sequences un, vn, wn,sn are xn or yn, are studied. It is shown that each of these sixteen systems is practically solvable, complementing some recent results on solvability of related systems ofdifference equations.
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