In my book it merely lists the instructions "The steps you will follow are the same as multiplying fractions-only in reverse". I know that when you multiply fractions its "straight across", but this does not help me much I do not comprehend it and I cannot visualize it.
Another example is
Could some one please clarify in detail how I go about doing this exactly?
There is no difference in saying: and or or
It's not a rule or anything. It's just that it doesn't matter whether you divide/multiply first.
For example, if you multiply:
This is no different if you wrote it like this: or or
You can divide 4 by 2 first and multiply by 5. Or you can multiply 4 and 5 first then divide by 2. Or you can divide 5 by 2 and then multiply by 4. Or you can multiply 1/2 and 5 and 4. They're all equivalent.