Respuesta :
3 goes into 51 and 9 evenly because if you divide 51 by 3, you'll get 17 and if you divide 9 by 3, you'll get 3.So 3 is the answer to the question.
3 will go into 51 and 9 evenly b\c you divide 51 into 9 and you get 17 then you divide 9 and 3 = 3