2×2= 3×4= 13+4= 4×5= 20-7=
16-8= 22+13= 5×8= 3×7= 56-21=
6×3= 89-33= 5+53= 2×8= 13+33=
61-21= 9×8= 6×6= 19+18= 5×9=
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