13-5 12-5 14-5 12-7 11-5
>>>>
13-7 11-7 14-7 12-7 16-7
>>>>
13-7= 12-6= 15-7= 14-6=
11-7= 15-6= 13-6= 12-7=

13-=5 | 16-=7 | 13-=4 |
-3=8 | -8=4 | 5+=14 |
15-=6 | 9+7=+8 | 14-5=-6 |

(按15-3、4、7、8、6的顺序。)
5+8=
17-9=
13-7=
16-7= 14-8= 10-8=
11-8= 13-7= 12-8=
16- =6 +2=9 8-3=10- 10+4= +6
8+ =17 -0=12 3+ =18-10 7+7= +
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14-6= ![]()
13-9= 16-7= 12-6= 11-8= 17-9=
15-8= 16-9= 14-8= 15-6= 11-7=
18-9= 14-7= 12-9= 13-3= 11-2=
11-3= 12-8= 11-4= 15-9= 17-8=
+7=16 12=8+
10=14- 18-=13
