42-6= 9×6= 4×2= 3×9=
2×8= 6×7= 30+50= 80-40=
7×8= 70-7= 3×3= 5×1=
8+25= 6×6= 5×6= 69-60=
3×7-7= 47-40-2= 53-(14+6)=
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