Question

giúp mình với

Answer 1

a: =1/4-3/2-1/4+1/4x12

=-3/2+3=3/2

b: \(=\dfrac{28}{15}\cdot\dfrac{1}{4}\cdot3+\left(\dfrac{32}{60}-\dfrac{79}{60}\right):\dfrac{47}{24}\)

\(=\dfrac{7}{5}+\dfrac{-45}{60}\cdot\dfrac{24}{47}=\dfrac{239}{235}\)

c: \(=-8\cdot\dfrac{-1}{24}+\dfrac{-2}{5}\cdot\dfrac{15}{2}=3-3=0\)