• 2 Решите уравнение 3+x-1 = x-2 3 5

Решение:
$$\frac{3+x-1}{3} = \frac{x-2}{5}$$
$$\frac{x+2}{3} = \frac{x-2}{5}$$
$$5(x+2) = 3(x-2)$$
$$5x + 10 = 3x - 6$$
$$5x - 3x = -6 - 10$$
$$2x = -16$$
$$x = -8$$
Ответ: $$x = -8$$