Re-arranging Larson-Miller parameter for rupture time

[hoola]

Homework Statement

I am trying to re-arrange the following formula so I can work out the creep rupture time of a material, using the Larson-Miller parameter (LM)

Homework Equations

LM = T (C + log tr)

where : C = constant ( usually of the order of 20 )
T = the temperature in Kelvin
tr = rupture time in hours.

The Attempt at a Solution

I am struggling with the re-arrangement of the "log" bit. Any help would be very much apppreciated.

 

[Hootenanny]

Hi hoola and welcome to PF,

What is the inverse of a logarithm?