(х-11/30) - 16/45= 2/9 ре
(х - 11/30) - 16/45 = 2/9 х - 11/30 = 2/9 + 16/45 х - 11/30 = 10/45 + 16/45 х - 11/30 = 26/45 х = 26/45 + 11/30 х = 52/90 + 33/90 х = 85/90 х = 17/18