9) \(|-\frac{11}{12}|+|-2,5|-|\frac34|=\)

\(|-\frac{11}{12}|+|-2,5|-|\frac34|=\frac{11}{12}+\frac52-\frac34=\frac{11}{12}+\frac{30}{12}-\frac{9}{12}=\frac{32}{12}=\frac83\).

Ответ: \(\frac83\).