79-20=
64-7=
71-9=
26+4=
92-7=
60+30=
33-8=
53+30=
58+6=
75+10=
30+27=
42+9=
84-40=
90+9=
8+65=
69-55=
34+29=
73-27=
28+26=
85-27=
13+47=
68-18=
90-44=
46+42=
64-7=
71-9=
26+4=
92-7=
60+30=
33-8=
53+30=
58+6=
75+10=
30+27=
42+9=
84-40=
90+9=
8+65=
69-55=
34+29=
73-27=
28+26=
85-27=
13+47=
68-18=
90-44=
46+42=