Question

Answer 1

1: \(=\dfrac{-1}{12}-\dfrac{21}{8}+\dfrac{1}{3}=\dfrac{-2}{24}-\dfrac{63}{24}+\dfrac{8}{24}=\dfrac{-57}{24}=\dfrac{-19}{8}\)

2: \(=\dfrac{-7}{4}+\dfrac{1}{9}+\dfrac{37}{18}=\dfrac{-63}{36}+\dfrac{4}{36}+\dfrac{74}{36}=\dfrac{15}{36}=\dfrac{5}{12}\)

3: \(=\dfrac{-5}{6}+\dfrac{3}{8}-\dfrac{1}{10}=\dfrac{-100}{120}+\dfrac{45}{120}-\dfrac{12}{120}=\dfrac{-67}{120}\)

4: \(=\dfrac{2}{5}-\dfrac{4}{3}-\dfrac{1}{2}=\dfrac{12}{30}-\dfrac{40}{30}-\dfrac{15}{30}=\dfrac{-43}{30}\)