8 - (3 * 6/15) = 8 - (18/15) = 8 - 6/5 = (40/5) - (6/5) = 34/5

16 - (3/13) - (6 * 8/13) = 16 - (3/13) - (48/13) = 16 - (3 + 48)/13 = 16 - 51/13 = (208/13) - (51/13) = 157/13

9 - 3 - (8/13) = 6 - (8/13) = (78/13) - (8/13) = 70/13

Отже, значення виразів будуть:

34/5

157/13

70/13