2∧x＝9 x＝log?92∧y＝8／3y＝log?﹙8／3﹚x＋2y＝log?9＋2log?﹙8／3﹚＝log?9＋log?﹙8／3﹚2＝log?[9×﹙8／3﹚2]＝log?82＝6