3()3()3()3=8,在括号内填上运算符号.

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3()3()3()3=8,在括号内填上运算符号.3()3()3()3=8,在括号内填上运算符号.3()3()3()3=8,在括号内填上运算符号.3(×)3(-)3(÷)3=83×3-3÷3=8

3()3()3()3=8,在括号内填上运算符号.
3()3()3()3=8,在括号内填上运算符号.

3()3()3()3=8,在括号内填上运算符号.
3(×)3(-)3(÷)3=8
3×3-3÷3=8