Wrong + wrong = right (five possible answers)

This doesn't even make sense, but ill try.

neg + neg = pos

A clerk who steals money from her company justifies her actions by saying that the company has been overcharging customers for years.

When Cory gets caught for speeding, he tells the police officer that three people just passed him traveling faster than he was.

cryptarithm

sorry kid, thats all i got.