3×6= 40-7= 20+39= 7×8= 7×4+20=
35+6= 9×4= 34-6= 6×5= 42+28-34=
56-3= 54-21= 7×6= 2×8= 78-(8+9)=
5×7= 3×9= 42-9= 52-7= 9×9-8=
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