1. The problem statement, all variables and given/known data e^x+x=5 2. Relevant equations Lambert W-function? 3. The attempt at a solution I moved everything around and got: Ln(5-x)=5.... It doesn't really help. I looked at wolframalpha, and it said I need the Lambert W-function (no clue what that is). Can this equation be solved Without graphing it, only using algebraic methods?