33+=52
18+=79
64+=181
-44=55
-48=42
-93=106
99-=27
132-=65
199-=127
32+49=
54+77=
119+163=
3×6=
6×7=
7×9=

-33=100-46
18+29+23+45=
98-49=+15
52+29+33-108=
37++87=191
87+32-66-48=
46+-56=73
200-25-48-73=