REARRANGE EQUATION
Our first step is to rearrange the equation 
so that what we know is on one side
and what we do not know 
v is on the other.
    - 
    Multiply both sides by the reciprocal of γ.
    It contains v which we do not know.
    
 
   
    - 
    Divide both sides by tman.
    We have actual numbers for tGod 
    and tman.
    
 
   
Remember Algebra 101?