a) 5/7 : x = 10
x = 5/7 : 10 = 5/7 x 1/10 = 5/70
b) x : 1/15 = 3/11
x = 1/15 x 3/11 = 3/165
c) 17 si 1/2 : x = 3 si 1/2
35/2 : x = 7/2
x = 35/2 : 7/2 = 35/2 x 2/7 = 35/7 = 5
d) 4 si 1/11 : x = 1 si 4/11
45/11 : x = 15/11
x = 45/11 : 15/11 = 45/11 x 11/15 = 45/15 = 3
e) x : 14 = 5 si 1/7
x : 14 = 36/7
x = 36/7 x 14 = 36 x 2 = 72
f) 226/125 : x = 339/125
x = 226/125 : 339/125 = 226/125 x 125/339 = 226/339 = 2/3