The given equation is
[tex]3x-4=5[/tex]Adding 4 on both sides, we get
[tex]3x-4+4=5+4[/tex]The given equation is equivalent to option B
Consider
[tex]3x-4+4=5+4[/tex]Solve
[tex]3x=9[/tex]The given equation is equivalent to option A
Consider
[tex]3x=9[/tex]
Dividing by 3 , we get
[tex]\frac{3x}{3}=\frac{9}{3}[/tex][tex]x=3[/tex]The given equation is not equivalent to option D.
Options C and E are also not equivalent to the given equation.
Hence the correct options are A and B.