Respostas

2013-06-27T22:47:33-03:00

Tf=1/5Tc

 

5Tf=Tc

 

Tc/5 = Tf-32/9

 

5Tf/5 = Tf - 32/9

 

9Tf = Tf - 32

 

8Tf = -32

 

Tf = -32/8

 

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Tf = -4°F

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5Tf = Tc

 

5*-4= Tc

 

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Tc= -20°C

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