1) 7 + 5 - 31 - 19 19
---------------- = -------- = - ----
9 + 6 - 12 36 36
2) 28 * 45 * 11 13860 462
------------------ = --------- = --------
33 * 98 * 25 80850 2695
3) 7 9 13
1. - ( ---- + 1 ---- ) = - 2 ----
8 20 42
13 3 1
2. - 2 ----- + ----- = - 2 -------
42 10 105
4) 4 * 17 * 57 3876
------------------- = ----------- = 0,0625
51 * 19 * 64 62016