One can see similar solutions given in "Sanpo funkai" (a mathematical treatise that explains the resultant and applies it to several problems, written by Yoshizane TANAKA c. 1690) and in "Sanpo hakki" (a mathematical treatise that explains the resultant and Laplace's formula of determinant for nXn case, written by Tomotoki IZEKI of Osaka and published in 1690).
類似の結果は、田中由真の『算法紛解』（1690?）や、大阪の井関知辰の著書『算法発揮』（1690年刊）にも見られる。