Question

36:(х-1)=12:3 пж ответе

Answer 1

Ответ:

$\frac{36}{x - 1} = \frac{12}{3} \\ 12 \times (x - 1) = 36 \times 3 \\ 12x - 12 = 108 \\ 12x = 108 + 12 \\ 12x = 120 \\ x = 120 \div 12 \\ x = 10$