Resposta :
Tc = TF - 32 ---> Tc = Tc - 32 => tc9 = 5(tc - 32) --> 9tc = 5tc - 160 --> 9tc - 5tc = -160
5 9 5 9 4tc = - 160
tc = -160 = -40
4
5 9 5 9 4tc = - 160
tc = -160 = -40
4
Boa tarde!
TC/5=TF-32/9
9t=5t-160
9t-5t=-160
4t=-160
T=-160/4
T=-40
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