Answer
$-40.0 ^{\circ}C$
Work Step by Step
We know that the equation to convert from Celsius to Fahrenheit is given by:
$T(F) = (1.8 \times T(c)) +32$
Contrarily, if we want to convert from Fahrenheit to Celsius, we use the formula:
$T(c) = \frac{(T(F) -32)}{1.8}$
Once we know this, we plug in the given value. We simplify using a calculator, remembering parentheses, to obtain the answer:
$-40.0 ^{\circ}C$
