Respuesta :

To know if a ratio is equivalent, divide the original and see if the others equal the same.
2/7 = 0.2857
6/21 = 0.2857
7/21 = 0.3333
7/27 = 0.2592
4/14 = 0.2857
9/81 = 0.1111

The correct answers are 6:21 and 4:14

Hope this helps =)
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