Question

Знайти x 5:x=7:(8-x)
Найти x 5:x=7:(8-x)

Answer 1

$frac{5}{x} = frac{7}{8 - x} \ 7x = 5(8 - x) \ 7x = 40 - 5x \ 7x + 5x = 40 \ 12x = 40 \ x = 40 div 12 \ x = 10 div 3 \ x = 3 frac{1}{3}$