Respuesta :

P=I*R*T 
I*R*T=P 
T*(I*R)=P
T*(I*R)/(I*R)=P/(I*R)
T=P/(I*R)

We simply rearrange the equation:
P = IRT
Dividing by IR on both sides,
TIR/IR = P/IR
T = P/IR