Explanation
[tex]3x+4=12x-1[/tex]
Step 1
subtract 3x in both sides
[tex]\begin{gathered} 3x+4=12x-1 \\ 3x+4-3x=12x-1-3x \\ 4=9x-1 \end{gathered}[/tex]Step 2
add 1 in both sides
[tex]\begin{gathered} 4=9x-1 \\ 4+1=9x-1+1 \\ 5=9x \end{gathered}[/tex]Step 3
divide both sides by 9
[tex]\begin{gathered} 5=9x \\ \frac{5}{9}=\frac{9x}{9} \\ x=\frac{5}{9} \end{gathered}[/tex]I hope this helps you
