The Equation X + X = 0

8.5

/

2009

8.75

/

2012

4.8

/

2005

10

/

2014

4.5

/

1975

5

/

1964

2.3

/

2007

5

/

NaN

6.171

/

1998

4

/

2007

5

/

2000

6

/

1996

8

/

2022

4.5

/

1970

9.7

/

1994

6.333

/

1997

4

/

1945

5.3

/

2014

5

/

1924

10

/

2023

0

/

1937

4.5

/

1935

6

/

1919

4.8

/

2014

6

/

2014

6.2

/

2013

6

/

2013

7.3

/

2013

6

/

2014

2

/

1932

5

/

2020

7.392

/

2003

7.2

/

1982

6.5

/

2008

7

/

2012

6.152

/

2008

7

/

1981

6.833

/

1978

7.475

/

1926