Question

Alguem me ajuda com essas questoes?

Answer 1

         $\frac{26}{7} = \frac{21}{7} + \frac{4}{7 } \\ \\ \frac{21}{7} + \frac{4}{7} - \frac{4}{7} = \frac{21}{7} =3$

                                                                SUBSTRAIR $\frac{4}{7}$
                                                                         ALTERNATIVA d)


         $\frac{1}{3} +0,333... + 0,3 \\ \\ = \frac{1}{3} + \frac{3}{9} + \frac{3}{10} \\ \\ = \frac{1}{3} + \frac{1}{3} + \frac{3}{10} \\ \\ = \frac{2}{3} + \frac{3}{10} \\ \\ = \frac{60+27}{90} \\ \\= \frac{87}{90} \\ \\ = \frac{29}{30}$

                                                                         ALTERNATIVA b)