Given the equation :
[tex]9+4t=12-4t[/tex]The solution of the given equation will be as following:
Step 1 : combine the like terms
[tex]\begin{gathered} 4t+4t=12-9 \\ 8t=3 \end{gathered}[/tex]Step 2 : Divide both sides by 8
[tex]\begin{gathered} \frac{8t}{8}=\frac{3}{8} \\ \\ t=\frac{3}{8} \end{gathered}[/tex]So, the given equation has one solution