Question

Срочно очень прошу Помогите

Answer 1

$\frac{x - 3}{6} = \frac{7 - x}{3} \\ 3(x - 3) = 6(7 - x) \\ 3x - 9 = 42 - 6x \\ 3x + 6x = 42 + 9 \\ 9x = 51 \\ x = \frac{51}{9} \\ x = \frac{17}{3} \\ x = 5 \frac{2}{3}$

$\frac{12}{1 - x} = \frac{4}{3x - 1} \\ 12(3x - 1) = 4(1 - x) \\ 36x - 12 = 4 - 4x \\ 36x + 4x = 4 + 12 \\ 40x = 16 \\ x = \frac{16}{40} \\ x = \frac{4}{10} \\ x = 0.4$