Given:
[tex]\begin{gathered} 3x+2y=-12\ldots\ldots\ldots(1) \\ x=4y-18\ldots\ldots\ldots(2) \end{gathered}[/tex]
To find the value of y:
Substitute the equation (2) in (1) we get,
[tex]\begin{gathered} 3(4y-18)+2y=-12 \\ 12y-54+2y=-12 \\ 14y=-12+54 \\ 14y=42 \\ y=3 \end{gathered}[/tex]
Hence, the value of y is 3.
