5+42=
44+26=
38-26=
65-38=
81-6-30=
68+20-44=
3×4=
7×9=
4×8=
5×9+9=
6×3-8=
71-(56-22)=
30+47=
63-31=
12+21=
15+35=
78-34=
36+42=
21+28=
38-22=
5+66=
50-24=
22+18=
2×4+5=
15+13=
2×2+30=
3×3=
4×5=
9+(14-4)=
( )