Question

Qual e a temperatura em que as indicacao das escala celcius fahrenheit coicidem

Answer 1

$9\beta c=5(\beta f-32)$
$9x=5(x-32)$
$9x=5x-160$
$9x-5x=-160$
$4x=-160$
$\boxed{x=\frac{-160}{4}}}$
$\boxed{\boxed{Resposta:x=-40}}$