4+6=
4+7=
4+8=
4+9=
5+6=
5+7=
5+8=
5+9=
6+5=
6+6=
6+7=
6+8=
8-8=
9-8=
10-8=
11-8=
10-4=
11-3=
12-2=
13-10=
7+7-7=
3+8+3=
7-2+7=
5+
+6=11
+1+3=12
8-
+4=6