Respuesta:
Explicación paso a paso:
la primera solo es la D
la segunda
3/4, 6/8, 9/12, 12/16, 15/20
9/13, 18/26, 27/39, 36/52, 45/65
4/7, 8/14, 12,21, 16/28, 20/35
la tercera
16/32, 8/16. 4/8, 2/4, 1/2
140/560, 70/280, 35/140, 7/28, 1/4
60/80, 30/40, 15/20, 3/4
75/525, 15/105, 1/7
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Respuesta:
Explicación paso a paso:
la primera solo es la D
la segunda
3/4, 6/8, 9/12, 12/16, 15/20
9/13, 18/26, 27/39, 36/52, 45/65
4/7, 8/14, 12,21, 16/28, 20/35
la tercera
16/32, 8/16. 4/8, 2/4, 1/2
140/560, 70/280, 35/140, 7/28, 1/4
60/80, 30/40, 15/20, 3/4
75/525, 15/105, 1/7