For Rational Expressions (fractions with variables), we need to make sure we have a sound foundation in factoring!!!!!!!
For multiplying and dividing rational expressions (we are not solving for x, we are simplifying), we need factor if need be, and cancel or eliminate similar factors on the top and bottom, simplify and we're done!!!!!
WATCH OUT for division!!! You have to flip the expression after the division and then it turns into multiplication.
For adding and subtracting rational expressions we must find a common denominator!!!!!!! Then distribute or foil in the numerator, combine like terms, see if you can factor again in order to cancel out any factors in the bottom and you are done. See the video for a tutorial!!!!
Here are some more notes on adding and subtracting rational expressions...
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