Question
Convert – 40°F to the Celsius scale.
✓
Answer
$
\mathrm{F}=-40^{\circ} \mathrm{F}
$
Substitute the value of $\mathrm{F}$ in below equation
$
\begin{aligned}
\frac{C}{5} & =\frac{F-32}{9} \\
\frac{C}{5} & =\frac{-40-32}{9} \\
\frac{C}{5} & =\frac{-72}{9} \\
\frac{C}{5} & =-8 \\
C & =-8 \times 5 \\
C & =-40
\end{aligned}
$
Solution $=-40^{\circ} \mathrm{C}$
\mathrm{F}=-40^{\circ} \mathrm{F}
$
Substitute the value of $\mathrm{F}$ in below equation
$
\begin{aligned}
\frac{C}{5} & =\frac{F-32}{9} \\
\frac{C}{5} & =\frac{-40-32}{9} \\
\frac{C}{5} & =\frac{-72}{9} \\
\frac{C}{5} & =-8 \\
C & =-8 \times 5 \\
C & =-40
\end{aligned}
$
Solution $=-40^{\circ} \mathrm{C}$
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