Question

Найди корни уравнения 1:3x+1:19x−1:57x=21

Answer 1

$frac{1 times 19}{19 times 3x} + frac{1 times 3}{3 times 19x} - frac{1}{57x} = 21$
$frac{21}{57x} = 21 \ x = frac{21}{21 times 57} \ x = frac{1}{57}$