hahaha uhhhh operations of e 1. The problem statement, all variables and given/known data i'm reading this online math help thing, and i can't seem to memorize how/why this is 2. Relevant equations how did they get this? edit* how did they get the answer from the left to the right side of the arrow? 3. The attempt at a solution i know this is prob. the beginner stuff, but i forgot this from a long time ago. and don't worry, this is only one step of the equation, not the whole answer. Thanks!