Question

Помогите пожалуйста с 3 номером!

Answer 1

$\frac{3 - x}{3} = \frac{x + 1}{2} - \frac{5x}{4} \\ \frac{4(3 - x)}{12} = \frac{6(x + 1)}{12} - \frac{3 \times 5x}{12} \\ 4(3 - x) = 6(x + 1) - 15x \\ 12 - 4x = 6x + 6 - 15x \\ - 5x = 6 \\ 5x = - 6 \\ x = - \frac{6}{5} \\ x = - 1.2$