Respostas

2013-07-15T22:58:37-03:00
Tf=2tc

Tc/5 = Tf - 32/9

Tc/5 = 2Tc - 32/9

9Tc/5 = 2Tc - 32

9Tc = 10Tc - 160

-Tc = - 160

Tc=160°C

****************************

Testando a informação

Tc/5 = Tf - 32 /9

160/5 = Tf - 32/9

32 = Tf - 32/9

288 = Tf - 32

**************
Tf = 320°F
**************
1 5 1