9的乘加乘减（2023-10-29）

9的乘加乘减（2023-10-29）：3×9-9= 9×4+6= 9×8-9= 4×9-6= 9×4+3= 4×9-2= 2×9+8= 9×5-1= 7×9+7= 9×2-4= 9×7-3= 5×9-3= 9×4+5= 8×9-2= 2×9-4= 9×2+4= 4×9-4= 9×2-6= 9×8-6= 4×9+1= 9×4+8= 5×9-1= 2×9-7= 9×1+7= 3×9-3= 9×4+9= 9×3-8= 5×9-2= 9×5+2= 2×9-1= 1×9-3= 9×1+8= 5×9-7= 9×2-5= 9×5+4= 2×9+1= 9×4-9= 6×9-7= 4×9+2= 9×5+8= 1×9-6= 9×2-3= 9×4+6= 3×9-2= 9×5+3= 2×9+1= 4×9+3= 9×6+4= 1×9-2= 9×4-8= 9×5+5= 4×9-8= 9×5+1= 2×9-9= 6×...