Question

Thực hiện phép tính(hợp lý nếu có thể):

20\(\dfrac{\text{2}}{\text{5}}\) : \(\dfrac{\text{5}}{\text{6}}\) - 35\(\dfrac{\text{2}}{\text{3}}\) : \(\dfrac{\text{5}}{\text{6}}\) -|-\(\dfrac{\text{3}}{\text{4}}\)|

Answer 1

\(=\dfrac{102}{5}\cdot\dfrac{6}{5}-\dfrac{107}{3}\cdot\dfrac{6}{5}-\dfrac{3}{4}\)

\(=\dfrac{6}{5}\cdot\dfrac{-229}{15}-\dfrac{3}{4}\)

\(=\dfrac{-458}{25}-\dfrac{3}{4}=-\dfrac{1907}{100}\)

Answer 2

= 102/5 x 6/5 - 107/3 x 6/5 - 3/4

= 6/5 x ( 102/5 - 107/3 ) - 3/4

= 6/5 x -229/15 - 3/4

= -458/25 - 3/4

= -1907/100