Ответ:
Решение:
\( 3\frac{5}{12} + 1\frac{5}{6} - 2,75 = \frac{41}{12} + \frac{11}{6} - \frac{275}{100} = \frac{41}{12} + \frac{22}{12} - \frac{11}{4} = \frac{63}{12} - \frac{11}{4} = \frac{21}{4} - \frac{11}{4} = \frac{10}{4} = \frac{5}{2} = 2,5 \)Ответ: \( 2,5 \).
