13+6=
12+8=
7+( )=11
14+5-8
7+8=
20-7=
( )+3=20
7-5+9=
15-6=
8+9=
16-( )=10
19-6-9=
18-3=
16-8=
8=( )-8
15-7+5=
5+9=
14-7=
( )-6=13
17-3-6=
7+6= 6+8= 9+=13
+8=15 +7=12
5+915 14-94 168+8 917-9
3+9=
7+8=
10-9=
6+8=
8-5=
10-5=
12+4=
5+7=
10-6+6=
6-3+10=
10-4+3=
2+8+5=
16-10+9=
15-5-5=
17-8= 15-9= 13-5= 14-9= 5+7=
12-6= 3+9= 12-3= 11-2= 18-9=
8+=17 13-=4 +7<15
-9=9 15-9=-5 17->8