How do I Solve this equation

Hey there!
Solve for f :
f = 27.9 ✅
> Given expression :
[tex] \displaystyle \frac{f}{9} = 3.1 \\ \\ [/tex]
> Multiply both sides by 9 :
[tex] \displaystyle \frac{f}{9} \times \red{9} = 3.1 \times \red{9} \\ \\ \Longrightarrow \boxed{ \green{f = 27.9}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
Therefore, our answer is f = 27.9
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