Question 4:
Given :
[tex]4n-1=6n+8-8n+15[/tex]
Solve for n
so,
combine like terms:
[tex]\begin{gathered} 4n-6n+8n=8+15+1 \\ 6n=24 \end{gathered}[/tex]
divide both sides by 6
[tex]\begin{gathered} \frac{6n}{6}=\frac{24}{6} \\ \\ n=4 \end{gathered}[/tex]
