\[- 6(1,8s - 5,5) - 17,2s - 6 =\]
\[= - 10,8s + 33 - 17,2s - 6 =\]
\[= - 28s + 27;\]
\[s = - \frac{1}{5} = - 0,2:\]
\[- 28 \cdot ( - 0,2) + 27 =\]
\[= 5,6 + 27 = 32,6.\]