Исходное уравнение:
\[ 3.2(-5x + 0.5) - 12x = -6(0.5x - 5) \]
\[ (3.2) \cdot (-5x) + (3.2) \cdot (0.5) - 12x = -6(0.5x - 5) \]
\[ -16x + 1.6 - 12x = -6(0.5x - 5) \]
\[ -16x + 1.6 - 12x = (-6) \cdot (0.5x) - (-6) \cdot (5) \]
\[ -16x + 1.6 - 12x = -3x + 30 \]
\[ (-16x - 12x) + 1.6 = -3x + 30 \]
\[ -28x + 1.6 = -3x + 30 \]
\[ 1.6 = -3x + 28x + 30 \]
\[ 1.6 = 25x + 30 \]
\[ 1.6 - 30 = 25x \]
\[ -28.4 = 25x \]
\[ x = \frac{-28.4}{25} \]
\[ x = -1.136 \]
Ответ:
x = -1.136