Question

( -17/15-9/17) -( 2/3-9/17)

Answer 1

=-17/15-9/17-2/3+9/17

=-17/15-10/15

=-27/15

=-9/5

Answer 2

Giải:

\(\left(\dfrac{-17}{15}-\dfrac{9}{17}\right)-\left(\dfrac{2}{3}-\dfrac{9}{17}\right)\)

⇔ \(\dfrac{-17}{15}-\dfrac{9}{17}-\dfrac{2}{3}+\dfrac{9}{17}\)

⇔\(\dfrac{-17}{15}-\dfrac{10}{15}\)

\(\Leftrightarrow\dfrac{-27}{15}=\dfrac{-9}{5}\)

 

Answer 3

=-17/15-9/17-2/3+9/17

=-17/15-10/15

=-27/15

=-9/5