Helping a troubled teenager is more difficult when drugs are part of the 'equation'. [=when drugs are involved]
Money didn't 'enter the equation' when he offered to help. [=he didn't expect to be paid for helping]
The southern states will be an important part of the election 'equation'.
(..) AA: , PMS: . So, for points and the match, please turn your attention to the formula on the screens. Solve the equation. Holy crap. What the hell is that? Looks like something they found on the ship at Roswell. Come on. Think. (..)2008 TvShow: The Big Bang Theory Title: The Bat Jar Conjecture Season: 1 Episode 13