Question

Find the value of



a}
$\frac{ - 4}{7} - \frac{ - 7}{4}$


b}$\frac{ - 8}{15} \div \frac{4}{5}$

​

Answer 1

Step-by-step explanation:

$( \frac{ - 4}{7} ) - ( \frac{ - 7}{4} ) \\ = \: \frac{ (- 16) - ( - 49)}{28} \\ = \frac{ - 16 + 49}{28} \\ = \frac{33}{28}$

$( \frac{ - 8}{15} ) \div \frac{4}{5} \\ = \frac{ - 8}{15} \times \frac{5}{4} \\ = \frac{ - 2}{3}$