the white team lost 2/5 of all its games and won 39 games. how many games did they play? show and explain your work.

assuming there were no ties,

let the number games be x
So they won 3/5 of their games
(3/5)x = 39
x = 39(5/3) = 65

check:
(2/5)(65) = 26
(3/5)(65) = 39