Respuesta :

Philooz
Let x be the number of games they lost.

They won four games more than they lost, meaning they won 4+x games.

Games won + Games lost = Total games.
(4+x) + x = 18
4 + 2x = 18
2 + x = 9
x = 7

They lost 7 games, won 11 games.
Check : 7+11 = 18.