Question

13/17-23/31+4/17-8/31

Answer 1

\(=\dfrac{6}{119}\)

Answer 2

\(\dfrac{13}{17}-\dfrac{23}{31}+\dfrac{4}{17}-\dfrac{8}{31}\)

\(=\left(\dfrac{13}{17}+\dfrac{4}{17}\right)-\left(\dfrac{23}{31}+\dfrac{8}{31}\right)\)

\(=\dfrac{17}{17}-\dfrac{31}{31}\)

\(=1-1\)

\(=0\)

Answer 3

13/17 - 23/31 + 4/17- 8/31

= (13/17 + 4/17) - (23/31 - 8/31)

= 1 - 15/31

= 16/31

Answer 4

= 0