Tính biểu thức: 6/18 + 2 = …

\(\frac{6}{{18}}\) + 2 = \(\frac{6}{{18}}\) + \(\frac{{36}}{{18}}\) = \(\frac{{42}}{{18}}\) = \(\frac{7}{3}\)

3 – \(\frac{6}{{30}}\) = \(\frac{{90}}{{30}}\) – \(\frac{6}{{30}}\) = \(\frac{{84}}{{30}}\) = \(\frac{{14}}{5}\)

\(\frac{5}{{16}}\) × \(\frac{2}{{35}}\) = \(\frac{1}{{56}}\)

8 : \(\frac{4}{7}\) = 8 × \(\frac{7}{4}\) = 14