Question

Why-40degree Celsius is equal to - 40 Fahrenheit

Answer 1

this is impossible.....

Answer 2

suppose both read the same value = x. ℃=
$\frac{5}{9}$
$x = \frac{5}{9} (x - 32)$
$9x = 5x - 160$
$4x = - 160$
$x = - 40$