thực hiện phép tính:
1) \(\dfrac{-1}{12}\)- (2\(\dfrac{5}{8}\)- \(\dfrac{1}{3}\))
2) -1,75 - (\(\dfrac{-1}{9}\) - 2\(\dfrac{1}{18}\))
3) -\(\dfrac{5}{6}\) - (\(-\dfrac{3}{8}\)+\(\dfrac{1}{10}\))
4) \(\dfrac{2}{5}\)+(\(-\dfrac{4}{3}\))+(\(-\dfrac{1}{2}\))
5) \(\dfrac{3}{12}\)- (\(\dfrac{6}{15}\)- \(\dfrac{3}{10}\))
6) (\(8\dfrac{5}{11}\)+\(3\dfrac{5}{8}\))- \(3\dfrac{5}{11}\)
7) \(\dfrac{-1}{4}\). \(13\dfrac{9}{11}\)- 0,25 . \(6\dfrac{2}{11}\)
8) \(\dfrac{4}{9}\):(\(-\dfrac{1}{7}\))+ \(6\dfrac{5}{9}\): (\(-\dfrac{1}{7}\))