What is the LCM method for adding rational numbers?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The LCM (Least Common Multiple) method finds the smallest common denominator.
Steps:
- Find LCM of both denominators
- Convert each fraction to equivalent fraction with LCM as denominator
- Add numerators
- Simplify if needed
Example: Add 1/4 + 1/6
Step 1: LCM(4, 6) = 12
Step 2: Convert
- 1/4 = 3/12
- 1/6 = 2/12
Step 3: Add
- 3/12 + 2/12 = 5/12
Answer: 5/12
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