Final answer:
To reduce the fraction 14/21 to the lowest terms, divide both the numerator and denominator by their greatest common divisor (GCD) of 7. The fraction is then 2/3.
Step-by-step explanation:
To reduce the fraction 14/21 to the lowest terms, we need to find the greatest common divisor (GCD) of both the numerator and the denominator. In this case, the GCD of 14 and 21 is 7.
Dividing both the numerator and the denominator by 7, we get 14/21 = 2/3.
Therefore, the fraction 14/21 reduced to lowest terms is 2/3.