posted by elisha .
its a logarithm
Try cutting and pasting to wolframalpha's website to make things clearer. Blessings!
There is no solution to our equation
if you meant it the way you typed it , then
3^x + 1 = 4^x + 1
3^x = 4^x would only be true if 3 = 4
If you meant 3^(x+1) = 4^(x+1)
this could only be true if 3 = 4