You actually don't need to supplement with Omega 6 or Omega 9. You get enough of it already. In fact, more than enough of it. The problem is with the Omega 3. The ideal Omega 6 to Omega 3 ratio is thought to 2:1 or 1:1 even. But, because most modern processed foods contain fats that are very high in Omega 6, eg. soybean oil, sunflower oil etc., our ratios are out of whack and are as high as 10 to 1 and even 20 to 1.
Only supplement with Omega 3. Make sure it's from wild caught fish. It usually pays to spend a bit more in this case because Omega 3 can break down and oxidize very quickly, and in fact can be more detrimental in this case. Nordic Naturals is a good brand. I am not sure if you can get it where you are, or you can order it online.
The other thing you can do, instead of supplementing is to reduce your Omega 6 consumption. Most packaged and industrially made foods contain loads of it. If you can cook your own meals, use something like Extra Virgin Olive Oil to do so.