1. The problem statement, all variables and given/known data 3^x + x = 4 solve for x. 2. Relevant equations I'm thinking of using the logarithm laws. log(a.b) = log a + logb log(a/b) = log a - log b log(a^b) = bloga 3. The attempt at a solution Well if I isolate the exponential 3^x = 4-x take logs on both sides xlog3 = log(4-x) I can't seem to get the x out of the log.