There's another way to do this, but I'm showing you what I use.
First: I would go ahead and subtract 9x from both sides of the equation. By doing that, the "9x" on the left side would cancel out and you would be left with "7=-6x-5"
Second: Add 5 to both sides of the equation. It should cancel out the 5 on the right and you should be left with "12=-6x"
Lastly: Divide both sides by -6, the -6 on the right next to the variable will cancel out and you'll be left with "-2=x" Which is the solution.
