Question

Решите уравнение: 5,4/5x=2/5-12

Answer 1

$\frac{5,4}{5x} = \frac{2}{5} -12$
$\frac{27}{25x} =- \frac{58}{5}$ ⇒ $27*5=-25x*58$
$\frac{27*5}{1450x} =- \frac{-25x*58}{1450x}$
Упрощаем:
$\frac{27*5}{1450x} =-1$
И получаем:
х=-27/290

Ответ:-27/290

Answer 2

$\frac{5.4}{5x} =0.4-12 \\ \\ \frac{5.4}{5x} =-11.6 \\ \\ \frac{5.4}{5x} = \frac{-11.6}{1} \\ \\ -58x=5.4\\ x=-5 \frac{2}{5} :58\\ \\ x= -5 \frac{2}{5} :58 \\ \\ x=- \frac{27}{5*58} \\ \\ x=- \frac{27}{290}$