just need this &' three more .

✿[tex]\underline{\textbf{\textsf{ \purple{Solution}:- }}}[/tex]
[tex]\sf{\\}[/tex][tex]\sf3(x - 4) = 6x - 2(x + 3)[/tex] [tex]\longrightarrow \sf3x - 12 = 6x - 2x - 6 [/tex] [tex]\longrightarrow\sf3x - 12 = 4x - 6[/tex] [tex]\longrightarrow\sf3x - 4x = 12 - 6 [/tex]
[tex]\longrightarrow\sf -x = 6[/tex]
[tex]\leadsto \underline{\boxed{\mathfrak{ \pink{x = -6} }}} [/tex]