Respuesta :

3/6 
1/2  if you divide by 3 so if 3/3=1, 6/3=2
6/12 multiplied by 2      3x 2= 6, 6x2=12
9/18  same     by 3        3x3=9, 6x3=18
12/24 same     by 4       3  4=12 , 6 4 = 24
15/30  same by 5            3 5 = 15, 6 5=30