How to solve an equation

Hello,

I have a function equation and it is difficult to set it to the value x.

If is there a matlab in which I enter numbers data and get an x result as in this example?

Thanks in advance

clear;

fOut=1/3
m=1
s=1

fOut = (exp(-0.5*((m-x)/s)^2)/(s*(2*pi)^0.5))

Get the solution 
x=...

Answer 1

[KSSV]

syms x 

fOut=1/3
m=1
s=1

eqn = fOut -(exp(-0.5*((m-x)/s)^2)/(s*(2*pi)^0.5))== 0 ;
s = solve(eqn,x)

[Emilia]

Thank you for your response. :)

Small question, after this equation I get two positive and negative solutions, I want it to be accepted only positive how can it be done?