加減X除

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                                   1)   2 (   ) 5 = 8 (   ) 1

                                   2)   3 (   ) 1 = 8 (   ) 2

                                   3) 14 (   ) 6 = 2 (   ) 4

                                   4)   6 (   ) 4 = 3 (   ) 8

                                   5)   6 (   ) 4 = 3 (   ) 2

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