Respuesta :
a) 3/10 = 9/30 = 12/40
b) 4/5 = 8/10 = 12/15
c) 8/28 = 4/14 = 2/7
d) 18/40 = 9/20 = 27/60
e) 1/27 = 2/54 = 3/81
f) 7/6 = 14/12 = 21/18
b) 4/5 = 8/10 = 12/15
c) 8/28 = 4/14 = 2/7
d) 18/40 = 9/20 = 27/60
e) 1/27 = 2/54 = 3/81
f) 7/6 = 14/12 = 21/18