Question

Subtract $\frac{-3}{8}$ from $\frac{-5}{7}$

Answer 1

The additive inverse of $\frac{-3}{8}$ is $\frac{3}{8}$

$\therefore \frac{-5}{7}-\left(\frac{-3}{8}\right)$

$=\frac{-5}{7}+\frac{3}{8}$

$=\frac{-5\times 8}{7\times 8}+\frac{3\times 7}{8\times 7}$

$=\frac{-40}{56}+\frac{21}{56}$

$=\frac{-40+21}{56}$

$=\frac{-19}{56}$