- -
-
-
-
17 -
(12 – 5) + 8 - 9 =
2 - (14 - 13) + 10 – 4 =
9 + (18 - 14) + (16 – 9) =
15 -- 8 - 7 + (14 + 5)
9 + 9 - 13 - (11 – 8) =
18 - (18 - 8 + 7) + 19 =
7 + 9 - (10 = 7 + 8)
16 - (19 - 5) + 8 - 7 =
9 + (11 - 3) - (15 - 13) =
7- (19 - 16 + 3) + 15 =
13 - (2 + 8) - (12 - 9) =
18 - (14 - 8) - (16 - 9) =
–
13 + (9 + 6 - 8) - 17 =
7 - (7 + 8 - 12) + 13 =
6 + (14 - 7) + (19 - 13) =
7
-
-
.
-
-
-
-
-
-
-
-
(12 – 5) + 8 - 9 =7+8-9=15-9=6
2 - (14 - 13) + 10 – 4 =2-1+10-4=1+10-4=11-4=7
9 + (18 - 14) + (16 – 9) =9+4+7=13+7=20
15 -8 - 7 + (14 + 5)=15-8-7+19=7-7+19=19
9 + 9 - 13 - (11 – 8) =9+9-13-3=18-13-3=5-3=2
18 - (18 - 8 + 7) + 19 =18-17+19=1+19=20
16 - (19 - 5) + 8 - 7=16-14+8-7=2+8-7=10-7=3
9 + (11 - 3) - (15 - 13) = 9+8-2=17-2=15
7- (19 - 16 + 3) + 15 =7-6+15=1+15=16
13 - (2 + 8) - (12 - 9) =13-10-3=3-3=0
18 - (14 - 8) - (16 - 9) =18-6-7=12-7=5
13 + (9 + 6 - 8) - 17 =13+7-17=20-17=3
7 - (7 + 8 - 12) + 13 =7-3+13=4+13=17
6 + (14 - 7) + (19 - 13) =6+7+6=19