5. ((115/14 - y) * 7) / 3 = 17
(115/2 - 7y) / 3 = 17
115/6 - 7y/3 = 17
115/6 - 17 = 7y/3
115/2 - 51 = 7y
115/14 - 51/7 = y
y = 115/14 - 102/14 = 13/14
6. 49/16 / (x - 5/16) = 7/8
49/16x - 49/5 = 7/8
49/16x = 7/8 + 49/5
16x/49 = 8/7 + 5/49 = (56 + 5) / 49
16x = 56 + 5 = 61
x = 61/16 = 3 целых 13/16
5. ((115/14 - y) * 7) / 3 = 17
(115/2 - 7y) / 3 = 17
115/6 - 7y/3 = 17
115/6 - 17 = 7y/3
115/2 - 51 = 7y
115/14 - 51/7 = y
y = 115/14 - 102/14 = 13/14
6. 49/16 / (x - 5/16) = 7/8
49/16x - 49/5 = 7/8
49/16x = 7/8 + 49/5
16x/49 = 8/7 + 5/49 = (56 + 5) / 49
16x = 56 + 5 = 61
x = 61/16 = 3 целых 13/16