167 9+3 3+9 20 19 12+7 17
17 11 7-4 7+4 13 18 13 17-5
+=15
+=12
+=17
8+7= 9-6= 6+10= 4+7= 11-10=
9+5= 12-2= 7+5= 9-4= 7-7=
+11=15 8+=16 10-=7 9+=16
19-=12 +7=15 7+=12 6+=12
8+3= 6+9= 5+8= 7+7=
19-8= 18-8= 11+9= 3+7-2=
914 124+9
7+88+7 ★+6★+4
118 07 5-50-0
33-0 12+1 7+57-5
5+814 1818-8 3+915-3 6+913
1220 919 8 12
16 13 17