Question

Giúpppp êm vớiiiii gấppp lắm ạ:<

Answer 1

a: \(=\dfrac{48}{36}+\dfrac{7}{5}\cdot\dfrac{20}{21}=\dfrac{4}{3}+\dfrac{4}{3}=\dfrac{8}{3}\)

b: \(=\dfrac{7}{3}-\dfrac{1}{3}\cdot\left[-\dfrac{3}{2}+\dfrac{2}{3}+\dfrac{4}{10}\cdot5\right]\)

\(=\dfrac{7}{3}-\dfrac{1}{3}\cdot\dfrac{7}{6}=\dfrac{7}{3}-\dfrac{7}{18}=\dfrac{42-7}{18}=\dfrac{35}{18}\)

c: \(=\left(29+\dfrac{1}{4}\right):\dfrac{9}{4}=\dfrac{117}{4}\cdot\dfrac{4}{9}=\dfrac{117}{9}=13\)

d: \(=\left(4-\dfrac{4}{5}\right)\cdot\dfrac{11}{8}-\dfrac{8}{5}\cdot4\)

\(=\dfrac{16}{5}\cdot\dfrac{11}{8}-\dfrac{32}{5}\)

\(=\dfrac{22}{5}-\dfrac{32}{5}=-\dfrac{10}{5}=-2\)

Answer 2