Question

Найдите значения выражения

Answer 1

$2 { }^{ - 2} + 6 {?}^{ - 1} = \frac{ 1}{2 {}^{3} } + \frac{1}{6} = \frac{1}{8} + \frac{1}{6} = \frac{7}{24}$
$\frac{7 {}^{ - 8} \times 7 {}^{ - 9} }{7 {}^{ - 16} } = \frac{7 {}^{ - 17} }{7 {}^{ - 16} } = \frac{1}{7}$