(Original post by multiplexing-gamer)
I've totally forgotten how to make y the subject.
How would I make y the subject of 2b=3(y+8)
You can rearrange anything when you consider that if two things are equal, then if you do the same thing to both sides, they are still equal.
So, the first step is to try and eliminate the 3 multiplying (y+8):
Therefore, diving both sides by 3, gives:
It's crucial you understand the concept here: this works because both things are equal to begin with, and so if I do the same to both things, they are still equal afterwards. Once you grasp that, then all these problems follow a simple recipe: if you have a multiplier you need to eliminate, you divide both sides by it, and if you have an addition (or subtraction) you need to remove, you subtract (or add) the number to both sides.
This skill is vital to your understanding of maths at a most basic level, so please do take the time to make sure you understand the concept here, which I shall repeat once again: if two things are equal, then if you do the same thing to both of them, they are still equal afterwards.