ALGEBRA - solved problems
  Rational Expressions
     Simplification of rational expressions, reducing to lowest terms
17.    Reduce the following rational expression to lowest terms.
 
 
 
  factoring out the minus sign,
a - b = -(b - a)
or
- a + b = -(a - b).
 
 
 
18.    Reduce or simplify the following rational expression to lowest terms.
 
 
 
 
 
 
Addition and subtraction of rational expressions
19.    Perform the indicated operations and reduce the answer to lowest terms.
 
Multiplication and division of rational expressions
20.    Perform the indicated operations and reduce the answer to lowest terms.




proof
Note, since each second line should be subtracted, the sign of each term is reversed.
Solving complex rational expressions
21.    Simplify complex fractions.
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