№5. Решите уравнения 1) 2x -7 + 6x + 1 = 18 2) 4-8,2x – (3,8x + 1) = 5

1) $$2x - 7 + 6x + 1 = 18$$

$$8x - 6 = 18$$

$$8x = 24$$

$$x = 3$$

2) $$4 - 8,2x - (3,8x + 1) = 5$$

$$4 - 8,2x - 3,8x - 1 = 5$$

$$-12x + 3 = 5$$

$$-12x = 2$$

$$x = -\frac{2}{12} = -\frac{1}{6}$$

Ответ: 1) $$x = 3$$, 2) $$x = -\frac{1}{6}$$