Question

Answer 1

a)\(\dfrac{-7}{15}-\dfrac{4}{5}+\dfrac{2}{3}=\dfrac{-7}{15}-\dfrac{12}{15}+\dfrac{10}{15}=\dfrac{-9}{15}=\dfrac{-3}{5}\)

b)\(\dfrac{-3}{4}:\dfrac{7}{6}=\dfrac{-3}{4}.\dfrac{6}{7}=\dfrac{-9}{14}\)

c)\(\dfrac{-12}{13}.\dfrac{26}{-15}:\dfrac{-5}{9}=\dfrac{8}{5}.\dfrac{-9}{5}=\dfrac{-72}{25}\)

d)\(\dfrac{2}{5}:\dfrac{-4}{9}:\dfrac{10}{11}=\dfrac{2}{5}.\dfrac{-9}{4}.\dfrac{11}{10}=\dfrac{-99}{100}\)

Answer 2

a: \(=\dfrac{-7}{15}-\dfrac{12}{15}+\dfrac{10}{15}=\dfrac{-9}{15}=\dfrac{-3}{5}\)

b: \(=\dfrac{-3}{4}\cdot\dfrac{6}{7}=\dfrac{-18}{28}=-\dfrac{9}{14}\)

c: \(=\dfrac{4}{5}\cdot2\cdot\dfrac{-9}{5}=\dfrac{-72}{25}\)

d: \(=\dfrac{2}{5}\cdot\dfrac{-9}{4}\cdot\dfrac{11}{10}=\dfrac{1}{2}\cdot\dfrac{-9}{5}\cdot\dfrac{11}{10}=\dfrac{-99}{100}\)