Respuesta :

adbell2010

Answer:

1 : 3

Step-by-step explanation:

divide both sides of 140 : 420 by 70 to get 2 : 6

divide both sides of 2 : 6 by 2 to get 1 : 3

robeldessalegn5280

Answer:

1:3

Step-by-step explanation:

70:210

7:21

1:3

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