Hi All,

Can someone tell me why:

2a/3b x 6/a^{2}b = 4/ab^{2}

Why does 6 become 4? Is this to do with cancelling common factors?

This is why I dislike the book Engineering Mathematics by Stroud for this very reason. It will give you some really basic example to start with then ask you to solve an equation when they haven't explained the specifics properly.

Thanks