Question

Kết quả của phép tính  17/9 + 19/7  –  8/9   – 5/7  là:

Answer 1

3

Answer 2

\(\dfrac{17}{9}+\dfrac{19}{7}-\dfrac{8}{9}-\dfrac{5}{7}\)

\(=\left(\dfrac{17}{9}-\dfrac{8}{9}\right)+\left(\dfrac{19}{7}-\dfrac{5}{7}\right)=1+2=3\)

Answer 3

\(\left(\dfrac{17}{9}-\dfrac{8}{9}\right)+\left(\dfrac{19}{7}-\dfrac{5}{7}\right)=1+2=3\)

Answer 4

3

Answer 5

\(=\left(\dfrac{17}{9}-\dfrac{8}{9}\right)\)\(+\left(\dfrac{19}{7}-\dfrac{5}{7}\right)\)

\(=\dfrac{9}{9}+\dfrac{14}{7}\)

\(=1+2\)

\(=3\)

Answer 6

\(\dfrac{17}{9}\) + \(\dfrac{19}{7}\) - \(\dfrac{8}{9}\) - \(\dfrac{5}{7}\)

= \(\left(\dfrac{17}{9}-\dfrac{8}{9}\right)+\left(\dfrac{19}{7}-\dfrac{5}{7}\right)=1+2=3\)