Question

Решите уравнение 1/4 x+1/9x+5/10x=7/54)Срочно!!

Answer 1

1/4 x+1/9x+5/10x=7/54
$\frac{1}{4} x + \frac{1}{9} x+ \frac{1}{2} x= \frac{7}{54} \\ \\ \frac{9+4+18}{36}x = \frac{7}{54} \\ \\ \frac{31}{36} x= \frac{7}{54} \\ \\ x= \frac{7}{54} : \frac{31}{36} \\ \\ x= \frac{7}{54} * \frac{36}{31} = \frac{7}{3} * \frac{2}{31} = \frac{14}{93}$
Ответ: x=$\frac{14}{93}$