Answer :
When you need to evaluate an expression it means that you have to replace the variables with the given values for them and solve
The expression is
[tex]12x-3y[/tex]For x=-1/4 and y=3
Replace the given values for x and y in the formula and solve
[tex]\begin{gathered} 12(-\frac{1}{4})-3\cdot(3) \\ -3-9=-12 \end{gathered}[/tex]