- 12 + ( - 64) + ( - 17) + 4 = - 12 - 64 - 17 + 4 = - 78 - 17 + 4 = - 95 + 4 = - 91
25 - 50 - 56 + 50 - 25 + 56 = - 75 - 56 + 50 - 25 + 56 = - 131 + 50 - 25 + 56 = - 81 - 25 + 56 = - 106 + 56 = - 50
3 .
[ - 3 + ( - 3)] - 14 : ( - 7) =
3 .
[ - 3 - 3 ] - 14 : ( - 7) =
3 .
( - 6) - 14 : ( - 7) =
( - 18) - ( - 2) =
( - 18) + 2 = - 16
2 .
[ 3 + ( - 2) .
5 ] + ( - 2) .
( - 5) .
( - 3) =
2 .
[ 3 + ( - 10)] + ( - 2) .
( - 5) .
( - 3) =
2 .
[ 3 - 10 ] + ( - 2) .
( - 5) .
( - 3) =
2 .
( - 7) + ( - 2) .
( - 5) .
( - 3) =
( - 14) + 10 .
( - 3) =
( - 14) + ( - 30) = - 14 - 30 = - 44 - 6 - 5 .
[ 5. ( - 2) - 5 ] + ( - 5) .
4 = - 6 - 5 .
[ ( - 10) - 5 ] + ( - 5) .
4 = - 6 - 5 .
( - 15) + ( - 5) .
4 = - 6 - ( - 75) + ( - 20) = - 6 + 75 - 20 =
69 - 20 =
49 - 9 : 3 - [ (8 - 10) - (9 - 2) ] = - 9 : 3 - [ ( - 2) - 7 ] = - 9 : 3 - [ - 2 - 7] = - 9 : 3 - ( - 9) = - 3 + 9 =
6
[ ( - 4) .
2 + 20] : ( - 4) + 2 .
(9 : ( - 3)) =
[ - 8 + 20 ] : ( - 4) + 2 .
(9 : ( - 3)) =
12 : ( - 4) + 2 .
(9 : ( - 3)) =
12 : ( - 4) + 2 .
( - 3) =
( - 3) + ( - 6) = - 3 - 6 = - 9
( - 35) : ( - 5) - 3 .
(5 - 7) =
( - 35) : ( - 5) - 3 .
( - 2) =
7 - ( - 6) =
7 + 6 =
13
[( - 4) : ( + 2) ] - [ ( + 7) - ( - 2)] =
( - 2) - (7 + 2 ) =
( - 2) - 9 = - 2 - 9 = - 11
[ ( + 3) - ( + 5) + ( + 4) ] : [ ( + 15) : ( - 3) - ( - 7) ] =
[ 3 - 5 + 4 ] : [ - 5 + 7 ] =
2 : 2 =
1 - 13 .
( + 3) - ( - 12) .
( + 7) =
( - 39) - ( - 84) = - 39 + 84 =
45
[ ( - 25) + 5 - ( - 2)] : ( - 8) =
[ ( - 25) + 5 + 2 ] : ( - 8) =
[ - 25 + 5 + 2 ] : ( - 8) =
[ 20 + 2 ] : ( - 8) =
22 : ( - 8) = - 2, 75 - 8 .
[ 5 - ( - 2)] - 48 : [ 6 + ( - 14)] = - 8 .
[ 5 + 2 ] - 48 : [ 6 - 14) = - 8 .
7 - 48 : ( - 8) = - 56 - ( - 6) = - 56 + 6 = - 50 - 11 .
[10 + ( - 7)] + 36 : [ ( - 1) - ( - 10)] = - 11 .
[ 10 - 7 ] + 36 : [ - 1 + 10 ] = - 11 .
3 + 36 : 9 = - 33 + 4 = - 29
42 : [ ( - 6) - ( - 3)] + 28 : [ - 6 - ( - 8)] =
42 : [ - 6 + 3 ] + 28 : ( - 6 + 8 ] =
42 : ( - 3) + 28 : 2 =
( - 14) + 14 =
0.