Question

[Trần Hữu Thắng]

Answer 1

[Nguyễn Lê Phước Thịnh]

a: \(\dfrac{9}{5}-\dfrac{1}{9}:\dfrac{3}{5}\)

\(=\dfrac{9}{5}-\dfrac{1}{9}\times\dfrac{5}{3}=\dfrac{9}{5}-\dfrac{5}{27}\)

\(=\dfrac{243}{135}-\dfrac{25}{135}=\dfrac{218}{135}\)

b: \(10:\dfrac{6}{5}-\dfrac{5}{12}=10\times\dfrac{5}{6}-\dfrac{5}{12}\)

\(=\dfrac{25}{3}-\dfrac{5}{12}=\dfrac{100}{12}-\dfrac{5}{12}=\dfrac{95}{12}\)

c: \(\dfrac{5}{6}:\dfrac{4}{5}+\dfrac{7}{6}\times\dfrac{3}{4}=\dfrac{5}{6}\times\dfrac{5}{4}+\dfrac{7}{8}\)

\(=\dfrac{25}{24}+\dfrac{7}{8}=\dfrac{25}{24}+\dfrac{21}{24}=\dfrac{46}{24}=\dfrac{23}{12}\)