Question

Kết quả của phép công -4/5 + 2/-10 là

Answer 1

\(-\dfrac{4}{5}+\dfrac{2}{-10}=-\dfrac{4}{5}-\dfrac{2}{10}=-\dfrac{8}{10}-\dfrac{2}{19}=-\dfrac{10}{10}=-1\)

Answer 2

\(=\dfrac{-4}{5}+\dfrac{-1}{5}=\dfrac{-5}{5}=-1\)

Answer 3

-1

Answer 4

\(-\dfrac{4}{5}+\dfrac{2}{-10}=-\left(\dfrac{4}{5}+\dfrac{2}{10}\right)=-\left(\dfrac{8}{10}+\dfrac{2}{10}\right)=-\left(\dfrac{10}{10}\right)=-1\)

Answer 5

-1

Answer 6

-1