1) 36/ 108 = 18 / 54 = 9/ 27 = 1 /3
2) 52/ 78 = 26 / 39 = 2/3
3) 99 / 8181 = 11 / 909
4) 39/26 = 3/2, se simplifica cu 13
5) 40/ 320 = 4/ 32 = 1 /8
6) 14/ 49 = 2/ 7, se simplifica cu 7
7) 72/ 84 = 36/ 42 = 18 / 21 = 6 / 7
8) 180 / 720 = 18 /72 = 9 / 36 = 1 / 4