関連ワード:  is negative 8 a rational number    is negative 3 8 a rational number    is negative 7 8 a rational number    is negative 5 8 a rational number    is negative 1 8 a rational number    is negative 8/4 a rational number    is negative 2 8 a rational number    is negative 8/9 a rational number    is negative 8 an irrational number    is negative 5 3 8 a rational number