関連ワード:  is negative 1 a rational number    is negative one a rational number    is minus 1 a rational number    is negative 1 2 a rational number    is negative 1 3 a rational number    is negative 1 4 a rational number    is negative 1 5 a rational number    is negative 1 8 a rational number    is negative 1 6 a rational number    is negative 1 7 a rational number