Pls mam jeszcze 1 minute

[tex]8( - \frac{1}{2} a + \frac{3}{4} b - 0.1) = 8( - \frac{1}{2} a - \frac{3}{4} b - \frac{1}{10} ) = 4a + 6b - \frac{4}{5} [/tex]