Respostas

2013-09-04T21:12:48-03:00
Tx - (-20) / 120 - (-20) = Tc - 0 / 100 - 0


Tx + 20 / 140 = Tc/100

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Tx + 20 / 7 = Tc / 5
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Tx = Tc

Tc + 20/7 = Tc / 5

5Tc + 100 = 7Tc

7Tc - 5Tc = 100

2Tc = 100

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Tc = 50°C
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