SOLUTION: if (1/2)^x+1=1/3, what is the value of (1/2)^-x?

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: if (1/2)^x+1=1/3, what is the value of (1/2)^-x?      Log On


   

Question 886085: if (1/2)^x+1=1/3, what is the value of (1/2)^-x?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
%281%2F2%29%5Ex%2B1=1%2F3
%281%2F2%29%5Ex=1%2F3-3%2F3

%281%2F2%29%5Ex=-2%2F3, this is not possible.

%281%2F2%29%5E%28-x%29=1%2F%282%5Ex%29=-3%2F2, this is neither possible.