Question

\(-\dfrac{6}{7}-\left(\dfrac{2}{11}-\dfrac{6}{7}\right)\)

Answer 1

Lời giải:

$\frac{-6}{7}-(\frac{2}{11}-\frac{6}{7})=\frac{-6}{7}-\frac{2}{11}+\frac{6}{7}$

$=\frac{-2}{11}$

Answer 2

\(\dfrac{-6}{7}-\left(\dfrac{2}{11}-\dfrac{6}{7}\right)\)

\(=\dfrac{-6}{7}-\left(\dfrac{-52}{77}\right)\)

\(=\dfrac{-2}{11}\)