9×8-2= 9×2-2= 2×3-5= 1×4-1=
4×2-5= 7×5-4= 6×5-1= 4×8-6=
7×4-8= 2×3-1= 9×8-4= 3×8-8=
8×2-7= 7×2-5= 8×1-5= 5×4-3=
9×9-9= 7×3-4= 3×7-2= 4×5-6=