Question

Найди x в пропорции5/8=1/x-2

Answer 1

$\frac{5}{8} = \frac{1}{x-2}$

$x - 2 = \frac{8 * 1}{5}$

$x - 2 = \frac{8}{5}$

$5(x-2) = 8$

$5x - 10 = 8$

$5x = 8 + 10$

$5x = 18$

$x = \frac{18}{5}$

$x = 3\frac{3}{5}$

$x = 3,6$