Question

6/-7 9/4.2/15-2/14

Answer 1

Ta có: \(\dfrac{-6}{7}+\dfrac{9}{4}\cdot\dfrac{2}{15}-\dfrac{2}{14}\)

\(=\dfrac{-6}{7}-\dfrac{1}{7}+\dfrac{18}{60}\)

\(=-1+\dfrac{3}{10}\)

\(=\dfrac{-10+3}{10}=\dfrac{-7}{10}\)

Answer 2

=(-6/7 - 2/14) + 9/4 * 2/15

=(-6/7 - 1/7) + 3/2 * 1/5

=-1 + 3/10

=-7/10

Answer 3

Giải:

6/-7+9/4.2/15-2/14

=-6/7+3/10-2/14

=(-6/7-2/14)+3/10

=-1+3/10

=-7/10

Chúc bạn học tốt!