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@ @TY@                                @†a‡Èÿa@                                  @

                  .     46    =  9                 5               ()
                            5                                53            ()

                  .15 + 9 = 24

                                      . LCM(3, 5) = 15

.24 − 3 = 21                                .    46    =  3      15
                                                 15  

                                                                 46

                                                                     :

              1, 3, 5, 6, 9,10,12,15,18, 20,21,

              24, 25, 27, 30, 33, 35, 36, 39, 42, 45

                                         . 21

                                                                     :( )

              7       3                            = 55 ×109

               ×
        ( ) ( )52 23        = 514 × 29

        . 55 9

                                                                     :( )

              ABC = 100A + 10B + C

              AB = 10A + B

                  A=A

        ABC + AB + A = 111A + 11B +C
                111A + 11B + C = 300
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