1. a)
- 51 : ( - 3 ) =
= + 17
b) - 10 : ( + 5 ) =
= - 2
c) + 9 : ( - 9 ) =
= - 1
d) - 12 : ( - 3 ) =
= + 4
2. a) ( - 56 ) : ( - 8 ) = + 7
b) ( - 32 ) : ( + 1 ) = - 32
c) 5 : ( - 5 ) = - 1
d) ( + 20 ) : ( - 4 ) = - 5
3. a) ( 9 - 15 - 10 ) : ( - 2 ) = ( - 6 - 10 ) : ( - 2 ) =
= - 16 : ( - 2 ) = + 8
4. b) ( - 20 - 15 - 5 + 6 ) : ( - 10 - 7 ) =
= ( - 35 - 5 + 6 ) : - 17 =
= ( - 40 + 6 ) : - 17 =
= - 34 : - 17 =
= + 2
