2+3=
5
5+5=
10
3-2=
1
122+321=
443
12-4=
8
4+5=
9
6+6=
12
5-3=
2
45+28=
73
54-18=
36
6+7=
13
7+7=
14
7-4=
3
26+57=
83
74-11=
63
7+8=
15
8+8=
16
10-2=
421+153=
574
876-123=
753
9+7=
9+9=
18
9-4=
25+32=
57
44-29=
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