Question

8/x-4/5x при x=-1,6
пж решите

Answer 1

$frac{8}{x} - frac{4}{5x} = frac{8 times 5}{x times 5} - frac{4}{5x} = frac{40}{5x} - frac{4}{5x} = frac{36}{5x}$
При х = -1,6:
$frac{36}{5x} = frac{36}{5 times ( - 1.6)} = frac{36}{ - 8} = - frac{36}{8} = - 4.5$
Ответ: -4.5