Respostas

2013-08-14T12:20:49-03:00
Tc/5 = Tf - 32 / 9

Tc = Tf

Tc/5 = Tc - 32 / 9

9Tc = 5Tc - 160

4Tc = - 160

**************
Tc = -40°C
**************

-40/5 = Tf - 32/9

-8 * 9 = Tf - 32

-72 = Tf - 32

-72 + 32 = Tf

************
Tf = -40°F
************

1 2 1