Question

10д.-3д.= 9д.3ед.-3ед.= 8д.7ед.-8д.= 3д.1ед.-1ед.= 6д.5ед.-7ед= 4д.7ед.+8ед.= 8д.+2д.= 3д.+6д.= 5д.9ед.-9ед.= 1д.8ед-1д= 4д.+5д.= 7д.5ед-7д.= 2д.-2д.= 9ед.+7ед.= 5д.+5д.=

Answer 1

1)7д.
2)9д.
3)7ед.
4)3д.
5)5д.8ед.
6)5д.1ед.
7)10д.
8)9д.
9)5д.
10)8ед.
11)9д.
12)5ед.
13)0д.
14)16ед.
15)10д.

Answer 2

10д. - 3д. = 7д. 9д.3ед. - 3ед. = 8д.7ед. 8д.7ед. - 8д. = 7ед. 3д.1ед. - 1ед. = 3д. 6д.5ед. - 7ед. = -1д.2ед. (or 0д.5ед. if negative days are not allowed) 4д.7ед. + 8ед. = 5д.6ед. 8д. + 2д. = 10д. 3д. + 6д. = 9д. 5д.9ед. - 9ед. = 4д.9ед. 1д.8ед. - 1д. = 1д.7ед. 4д. + 5д. = 9д. 7д.5ед. - 7д. = 5ед. 2д. - 2д. = 0д. 9ед. + 7ед. = 16ед. 5д. + 5д. = 10д.