18+=42
38+=83
92+=135
-48=33
-87=32
-44=111
99-=76
108-=9
168-=48
57+58=
79+65=
153+142=
5×9=
3×6=
7×8=

-27=92-28
19+35+26+19=
27++18=121
57+39+43-99=
87-54=+24
75+89-68-56=
28+42=99-
200-25-18-143=