[tex]8(3b+1)=4(b+3)-9[/tex][tex]\begin{gathered} 24b+8=4b+12-9 \\ \end{gathered}[/tex]
subtract 4b from both sides
[tex]24b-4b+8=4b-4b+3[/tex][tex]20b+8=3[/tex]
subtract 8 from both sides
[tex]20b+8-8=3-8[/tex][tex]20b=-5[/tex]
divide both sides by 20
[tex]\begin{gathered} \frac{20b}{20}=\frac{-5}{20} \\ b=-\frac{1}{4} \end{gathered}[/tex]
