<quiz> {Qual'è la frazione equivalente a 3 7 {\displaystyle {\frac {3}{7}}} ? |type="()"} + 6 14 {\displaystyle {\frac {6}{14}}} - 3 11 {\displaystyle {\frac {3}{11}}} - 4 8 {\displaystyle {\frac {4}{8}}} - 8 16 {\displaystyle {\frac {8}{16}}}
