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.

For instance $\displaystyle \frac{x+1}{2} = \frac{1}{2}(x+1)$

Another example is

$\displaystyle \frac{7x}{8}= \frac{7}{8}x$

Could some one please clarify in detail how I go about doing this exactly?