The equation given is:
[tex]\frac{1}{4}(\frac{1}{3}k+9)=6[/tex]
Multiply both-side of the equation by 6
[tex]4\times\frac{1}{4}(\frac{1}{3}k+9)=6\times4[/tex][tex](\frac{1}{3}k+9)=24[/tex]
subtract 9 from both-side of the equation
[tex]\frac{1}{3}k=15[/tex]
To get k, we are to multiply both-side of the equation
[tex]k=45[/tex]
Therefore, Olga made a mistake in the last step
