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## 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.