Question

Subtract $\frac{2}{5}$ from $\frac{5}{7}$

Answer 1

Consider

$$\begin{gathered} \frac{5}{7}-\frac{2}{5} \\ =\frac{5\times 5}{5\times 7}-\frac{2\times 7}{7\times 5} \\ =\frac{25}{35}-\frac{14}{35} \\ =\frac{25-14}{35} \\ =\frac{11}{35} \end{gathered}$$

Hence, $\frac{5}{7}-\frac{2}{5}=\frac{11}{35}$