Question

210разделить на с =420разделить на 6

 

Answer 1

210      420

----- =  ------         =    420с= 210 * 6

  с          6                   420 с= 1260

                                    с =  1260 / 420

                                     с =3

 вот так))

Answer 2

210:с=420:6
420с=210*6
420с=1260
с=1260:420
с=3
Ответ:3