Answer :
To convert a temperature from Fahrenheit to Celsius, we use the formula
[tex]$$
^\circ C = \frac{5}{9}(^\circ F - 32).
$$[/tex]
Here, Barbara starts with [tex]$78^\circ F$[/tex] and subtracts 32 to get
[tex]$$
78 - 32 = 46.
$$[/tex]
The next step is to multiply this result by [tex]$\frac{5}{9}$[/tex]. In other words, you multiply 46 by [tex]$\frac{5}{9}$[/tex] to get the temperature in Celsius:
[tex]$$
46 \times \frac{5}{9}.
$$[/tex]
This step yields the Celsius temperature.
[tex]$$
^\circ C = \frac{5}{9}(^\circ F - 32).
$$[/tex]
Here, Barbara starts with [tex]$78^\circ F$[/tex] and subtracts 32 to get
[tex]$$
78 - 32 = 46.
$$[/tex]
The next step is to multiply this result by [tex]$\frac{5}{9}$[/tex]. In other words, you multiply 46 by [tex]$\frac{5}{9}$[/tex] to get the temperature in Celsius:
[tex]$$
46 \times \frac{5}{9}.
$$[/tex]
This step yields the Celsius temperature.
