Question

Tính: \(\left[\left(\dfrac{3}{5}\right)^2-2.\dfrac{3}{4}\right]:\left(0,2+\dfrac{18}{27}\right)\)

Answer 1

\(=\left(\dfrac{9}{25}-\dfrac{3}{2}\right):\left(\dfrac{1}{5}+\dfrac{2}{3}\right)\)

\(=\dfrac{-57}{50}:\dfrac{3+10}{15}=\dfrac{-57}{50}\cdot\dfrac{15}{13}=\dfrac{-171}{130}\)

Answer 2

 

=(9/25- 3/2) : (1/5 +2/3)

=-57/50:13/15

=-171/130