1
2 3 2 9
3
1 2
2 25 1
3 50
1
80- =26 +13=26
-12=30 22+ =30
2 =
21+29 40 53-23 53-25
51-29 32 34+25 25+43
3
57- 30 25 18+
4 29 12
50
