Răspuns :
[tex]3x+4=2(x-1) \ \textless \ =\ \textgreater \ 3x+4=2x-2 \ \textless \ =\ \textgreater \ 3x-2x =-2-4 \ \textless \ =\ \textgreater \ [/tex]
[tex]\ \textless \ =\ \textgreater \ x=-6 ; S ={-6}[/tex]
[tex]\ \textless \ =\ \textgreater \ x=-6 ; S ={-6}[/tex]