Respostas

2013-04-05T09:21:00-03:00

tetraC/5=tetraF-32/9

90/5=tetraF-32/9

18=tetraF-32/9

tetraF=32+9-18

tetraF=41-18

tetraF=23

2013-04-05T09:25:25-03:00

Veja:

 

T°C/5= T°F-32 /9

 

Daí basta substituir:

 

90°c/5 = T°F-32/9

 

5(T°F-32)=90 x 9

 

5TF=810

 

T°F=162

 

Espero ter ajudadoo....

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