1) (17-12) 5 1 1
---------- = ---------------- = --------------- = ----------------
15 * 2 15 * 2 3 * 2 6
2) (25 - 9) * 5 16 1
-------------------- = ----------------------- = ------------
15 * (38 - 22) 3 * 16 3
3) 8 * (17 - 12) 5 1
----------------- = ----------------- = -------------
80 10 2