Задания 15.1

Теория 15 – 00:00 15.1 – 01:13:12 15.2 – 01:26:32 15.3 – 01:38:12 15.4 – 01:48:13 15.5 – 02:09:35 15.6 – 02:18:36 15.7 – 02:25:14