1) 9 - 2|3 + 6 7|24 - 2 1|4 =
9 - 2|3 + 7|4 - 1|2 =
115|12 =
9 7|12
3) 17 3|4 - 9 1|32 + 4 3|8 - 5 3|16 =
51|4 - 9|32 + 3|2 - 15|16 =
417|32 =
13 1|32
2) 8 13|30 + 13 4|5 - 5 5|6 + 7|10 =
4 13|15 + 52|5 - 25|6 + 7|10 =
52|15 + 52|5 - 25|6 + 7|10 =
52|5 =
10 2|5
4) 21 4|15 + 1 5|6 - 9 7|30 + 16 7|24 =
7 4|5 + 5|6 - 3 7|10 + 2 7|3 =
28|5 + 5|6 - 21|10 + 14|3 =
9