\[ 3.2 : (0.05x + 0.11) = 9.75 - 5.56 \]
\[ 3.2 : (0.05x + 0.11) = 4.19 \]
\[ 0.05x + 0.11 = \frac{4.19}{3.2} \]
\[ 0.05x + 0.11 = 1.309375 \]
\[ 0.05x = 1.309375 - 0.11 \]
\[ 0.05x = 1.199375 \]
\[ x = \frac{1.199375}{0.05} \]
\[ x = 23.9875 \]
Ответ: x = 23.9875.