Explanation
[tex]3(3y-8)=30[/tex]Step 1
divide both sides by 3
[tex]\begin{gathered} 3(3y-8)=30 \\ \frac{3(3y-8)}{3}=\frac{30}{3} \\ 3y-8=10 \end{gathered}[/tex]Step 2
add 8 in both sides
[tex]\begin{gathered} 3y-8=10 \\ 3y-8+8=10+8 \\ 3y=18 \end{gathered}[/tex]Step 3
finally, divide both sides by 3
[tex]\begin{gathered} 3y=18 \\ \frac{3y}{3}=\frac{18}{3} \\ y=6 \end{gathered}[/tex]I hope this helps you