Alfie knows that the matricks have won 11 out of 20 games. He subtracts to find that the matricks lost -9 games what error did alfie make?

Question

he knows the lost -9 games what was his mistake

Answer 1

What happened is that Alfie subtracted in the wrong order:

20 - 11 = 9 (the total game number minus won games equals lost games)

11 - 20 = -9 (the won number of games minus the total number of games equal a negative number)