Respostas

2014-02-20T09:51:24-03:00
Resposta


Tf - 32/9 = Tc/5

Tc - 32/9 = Tc/5

5.(Tc - 32) = 9Tc

9Tc = 5Tc - 160

9Tc - 5Tc = -160

4Tc = -160

Tc = -160/4

Tc = -40ºC