Answer :

luana
[tex]y-12=4y\ \ \ |Add\ 12\ to\ both\ sides\\\\ y-12+12=4y+12\\\\ y=4y+12\ \ \ |Subtract\ 4y\ from\ both\ sides\\\\ y-4y=12\\\\ -3y=12\ \ \ |Divide\ by\ -3\ both\ sides\\\\ y=-4\\\\ \textbf{Solution\ is\ y=-4.} [/tex]
AL2006
-- Subtract ' Y ' from each side of the equation.

-- Then divide each side by 3, and the answer will jump out at you.