1) Add rational expressions with like denominators by adding the numerators and keeping the common denominator.
2) Find the least common denominator (LCD) when denominators are different, write the expressions with the LCD, then add the numerators.
3) Simplify the sum if possible by factorizing the numerator and/or cancelling common factors in the numerator and denominator.
6. 1. Add (or subtract) the numerators.
2. Retain common denominator.
3. Simplify the result.
HOW TO ADD OR SUBTRACT RATIONAL
EXPRESSION WITH LIKE TERMS
8. HOW TO ADD OR SUBTRACT RATIONAL
EXPRESSION WITH DIFFERENT DENOMINATORS
1. Find the least common denominator (LCD).
2. Write the equivalent expression of each
rational expression.
3. Add or subtract the numerators and keep the
LCD.
4. Simplify the result if possible.