
Ravi S. answered 12/18/12
Tutoring for Biology, Math, English, and computers in general.
The best thing to keep in mind is this:
Put all the variables to the left hand side of the equation and all the constants to the right hand side.
Assuming you know how to do this, your new equation would be:
-2x - 5x + 9x = 6 - 6
∴ - 7x + 9x = 0
∴ 2x = 0
∴ x = 0
That would be your final answer.