Question

convert -16 degree celsius into fahrenheit by formula c/5 = F - 32 / 9

Answer 1

We know the formula 
$\frac{C}{5}$=$\frac{F-32}{9}$
Here , C=-16 .
⇒$\frac{-16}{5}$=$\frac{F-32}{9}$
⇒$\frac{-16*9}{5}$=F-32
⇒-144=5(F-32)
⇒-144=5F-160
⇒5F=160-144=16
⇒F=$\frac{16}{5}$
=3.2
Ans: - 16 degree Celsius in Fahrenheit scale is 3.2 degree Fahrenheit (F).
-----------------------------------------------------------------------------------

Answer 2

F = $\frac{9}{5} C +32$ = $\frac{9}{5} (-16) +32$ = $\frac{-9*16}{5} + \frac{160}{5}$ = $\frac{-9*16 + 10* 16}{5}$ = $\frac{16}{5}$ = 3.2⁰C