Question

[anhmsmmsm]

tinh hop lí

a, \(\frac{2}{5}\)+\(\frac{-1}{6}-\frac{3}{4}-\frac{-2}{3}\)

Answer 1

[Chương Phạm]

\(\frac{2}{5}+\frac{-1}{6}-\frac{3}{4}-\frac{-2}{3}\)

\(\Leftrightarrow\frac{2}{5}+\frac{-1}{6}+\frac{-3}{4}+\frac{2}{3}\)

\(\Leftrightarrow\frac{48+\left(-20\right)+\left(-90\right)+80}{120}\)

\(\Leftrightarrow\frac{18}{120}=\frac{3}{20}\). > _ <

Answer 2

[『ღƤℓαէїŋʉɱ ₣їɾεツ』]

\(\frac{2}{5}+\left(-\frac{1}{6}-\frac{3}{4}--\frac{2}{3}\right)\)

\(\frac{2}{5}-\left(-\frac{2}{12}-\frac{9}{12}-\frac{-8}{12}\right)\)

\(\frac{2}{5}-\frac{-1}{4}=\frac{8}{20}-\frac{-5}{20}=\frac{3}{20}\)