Question

помогите пожалуйста ​

Answer 1

$\displaystyle \frac{9}{56}-(\frac{7}{15}-\frac{5}{12})(\frac{3}{14}+\frac{1}{2})=\frac{9}{56}-\frac{1}{20}*\frac{5}{7}=\frac{9}{56}-\frac{1}{4}*\frac{1}{7}=\frac{9}{56}-\frac{1}{28}=\frac{1}{8}=0,125$