I'm having trouble trying to solve for x in these equations, and I have a calculus exam on monday, so any help would be great!!

1. Solve each equation

(a) e^x - 2e^-x = 1

(b) ln(x^2 + e) - ln (x + 1) = 1

If you could explain the steps in getting the answers, that would be much appreciated. I'm a little lost on how to start them off.

The answers we were given on the sheet are:

(a) ln2 (b) 0, e