Respuesta :

Answer:

19/21

Step-by-step explanation:

6/7 + 1/21

Get a common denominator of 21

6/7 *3/3    + 1/21

18/21  + 1/21

19/21

Answer:

19/21

Step-by-step explanation:

same denominator so 6*3 18  7*3=21 so 18/21