5×<47 1078>109
Δ×〇=24
Δ-〇=2
Δ=
〇=
18÷3=
8×9+8=
35+48-22=
9+9=
8÷2=
2+89-17=
(48-47)×5=
5÷5=
6×6=
44-28+18=
(70+20)-18=
3×7-9=