I have the following equation:
I know it can be rearranged into this, but I do not quite understand how:
I know the first thing I can do is multiple both sides by $3 + 10n$ to get:
$$1000 - 6n = 3k + 10kn$$
Then I can add $6n$ to both sides to get:
$$ 1000 = 3k + 10kn + 6n$$
This is where my math knowledge now dies. I am unsure of what the next steps are. Could someone please explain in an idiot proof way of what needs to be done next to get the answer I am looking for?