We have to solve the following equation for x:
[tex]\frac{x+7}{4}=9[/tex]
First, we multiply by 4 to both sides:
[tex]\begin{gathered} \frac{x+7}{4}\cdot4=9\cdot4 \\ x+7=36 \end{gathered}[/tex]
And we move the 7 to the right side:
[tex]\begin{gathered} x=36-7 \\ x=29 \end{gathered}[/tex]
Thus, the value of x is 29.
