(4x - 1,6)(8 + x) = 0
4x - 1.6 = 0 или 8 + x = 0
4x = 1.6
$$x = \frac{1.6}{4} = 0.4$$
x = -8
Ответ: x = 0.4, x = -8
(3x - 2)(4 + \frac{1}{8}x) = 0
3x - 2 = 0 или 4 + \frac{1}{8}x = 0
3x = 2
$$x = \frac{2}{3}$$
$$\frac{1}{8}x = -4$$
$$x = -4 \cdot 8 = -32$$
Ответ: $$x = \frac{2}{3}$$, x = -32