Question

Найдите значение выражения
$( \frac{2}{7.5 - 6} - \frac{1}{9.5 - 7} ) \div \frac{14}{15}$
Прошу помогите

Answer 1

$(\frac{2}{7,5-6}-\frac{1}{9,5-7}):\frac{14}{15}=(\frac{2}{1,5}-\frac{1}{2,5}):\frac{14}{15}=(\frac{2}{\frac{3}{2} }-\frac{1}{\frac{5}{2} }):\frac{14}{15}=(\frac{4}{3}-\frac{2}{5}):\frac{14}{15}=\frac{20-6}{15}:\frac{14}{15}=\frac{14}{15}:\frac{14}{15}=1$