関連ワード:  is 8 4 a rational number    is 8 1 4 a rational number    is 8 3 4 a rational number    is 8 over 4 a rational number    is negative 8/4 a rational number    is 8 a rational numbers    is 4 7 8 a rational number    is 4 5 8 a rational number    3 4 8 7 is a rational number    1 4 3 8 is a rational number equal to