Question

transformar 28°C em °F​

Answer 1

Resposta:

$\frac{c}{5} = \frac{f - 32}{9} \\ \frac{28}{5} = \frac{f - 32}{9} \\ 5f - 160 = 252 \\ 5f = 252 + 160 \\5f = 412 \\ f = \frac{412}{5} \\ f = 82.4$