Question

Convert $-{40}^{\circ }F$ to the Celsius scale.​

Answer 1

Given,
Temperature on Fahrenheit scale $\left(F\right)=-{40}^{\circ }F$,
To find, Temperature on Celsius scale $\left(C\right)$

As we know,
$C=\frac{5}{9}(F-32)$

$C=\frac{5}{9}(-40-32)$

$C=\frac{5}{9}\times (-72)$
$C=-{40}^{\circ }C$


Hence, $-{40}^{\circ }F$ is equal to $-{40}^{\circ }C$ on the Celsius scale.