38+=62
36+=81
62+=185
-23=57
-18=36
-72=134
99-=41
161-=55
198-=189
36+42=
58+31=
118+168=
3×4=
6×7=
8×8=

-41=125-55
46+22+38+81=
98-27=+31
27+66+42-128=
39++18=112
77+88-99-55=
65+-23=116
250-56-76-96=