Let's satrt by copying the equation:
![9=5v+27+4v](https://img.qammunity.org/2023/formulas/mathematics/college/njugbwin0gaqih7bg9id3ifu3ch7jrluj5.png)
Firslty, let's leave the equation with all the terms with v on one side and all the term without v on the other.
The right side has all the terms with v, but there is one without v that we need to pass to the other side., we can do that by substracting both sides by 27:
![\begin{gathered} 9-27=5v+27+4v-27 \\ 9-27=5v+4v+27-27 \\ 9-27=5v+4v \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/6096jgzmcyjou1jwhrspporwaa11mcp49g.png)
Now, we evaluate the like-terms on each side:
![-18=9v](https://img.qammunity.org/2023/formulas/mathematics/college/f75e1akdxs1niims41mbzwd7etrxdpd2so.png)
Now, we can invert the sign so that the variable v go to the left side, as usual:
![9v=-18](https://img.qammunity.org/2023/formulas/mathematics/college/no7a1ff1facby73ynf6v7kfxkwsnutzi61.png)
To finish the solve. we can divide both sides by 9:
![\begin{gathered} (9v)/(9)=(-18)/(9) \\ v=-2 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/zc4p55zy4yj9j7zaa8oh2pujbzx0jmfmi3.png)