Question

qual e a fracao que somada com 7/5 ou multiplicar por 7/5 da nos dois casos, o mesmo resultado

Answer 1

            Seja a fração
                  x/y
                                 7/5 + x/y = (7/5)(x/y)
                                 7/5 = 7/5(x/y) - x/y
                                 7/5 = x/y(7/5 - 1) 
                                 7/5 = x/y(7/5 - 5/5)
                                 7/5 = x/y(2/5)
                                 x/y = (7/5)/(2/5) 
                                                                 x/y = 7/2
                                                                                    A FRAÇÃO E 7/2

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