5.56 Celsius
Explanation
To convert temperatures in degrees Fahrenheit to Celsius, subtract 32 and multiply by 0.55556 (or 5/9)
then
Step 1
subtract 32
[tex]\begin{gathered} \text{temp}_{deg}=42 \\ \text{temp}_{C1}=42-32 \\ \text{temp}_{C1}=10 \end{gathered}[/tex]Step 2
multiply by 5/9
[tex]\begin{gathered} \text{temp}_C=temp_{c1}\cdot\frac{5}{9} \\ \text{temp}_C=10\cdot\frac{5}{9} \\ \text{temp}_C=\frac{50}{9}=5.56 \end{gathered}[/tex]I hope this helps you