对于任意两个数m,n,有m*n=3分之2m-n,求9*(9*9)的值
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对于任意两个数m,n,有m*n=3分之2m-n,求9*(9*9)的值
对于任意两个数m,n,有m*n=3分之2m-n,求9*(9*9)的值
对于任意两个数m,n,有m*n=3分之2m-n,求9*(9*9)的值
9*9=2/3×9-9=-3
∴9*(9*9)
=9*(-3)
=2/3×9-(-3)
=9