Given:
[tex]y\text{ = 3}[/tex]We are required to evaluate the expression:
[tex]4y\text{ - 12}[/tex]To do this, we simply substitute 3 for y into the expression and simplify
[tex]\begin{gathered} =\text{ 4\lparen3\rparen - 12} \\ =\text{ 12 - 12} \\ =\text{ 0} \end{gathered}[/tex]Hence, the expression evaluates to 0
Answer: 0
