関連ワード:  prove that 3 4 2 7 is a rational number    prove that 3 4 2 7 is an irrational number    prove that 3 4 √ 2 7 is an irrational number    prove that 3 4 root 2 by 7 is an irrational number    prove that 3 4 2 7 is an irrational number given that 2 is an irrational number  
結果 : prove that 3 4 2 7 is a rational number