四八 二一十 三九
7×314 5×632 8×46×5
3+33×3 48-306×3 7×59×4
5× =35 ×9=63 6× =48
6×9= 9×2= 60-4= 5×5+6=
8×4= 1×4= 46+27= 8×9+9=
3×7= 5×8= 94-26= 5×7-6=
3×3= 7×7= 8+45= 6×4-7=
7×=21 4×=36 ×9=27
×4=32 7×=49 × =16
× =18 × =18 × =16
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( )×( )-( )=( )