Hi dkpeppard,

To preserve the value of a rational expression it is necessary to do the denominator just what you did to the numerator.

Example:

You see, nothing changes.

To 'clear' the denominator of a rational equation, it is necessary to multiply each term by the LCD. As long as you are multipling both sides of the equation by the same thing, nothing changes.

Example:

The LCD is 28(x+2)

Multiply each side by 28(x+2)