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Add 21/84 and 9/25

21/84 + 9/25 is 61/100.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 25 is 2100
  2. For the 1st fraction, since 84 × 25 = 2100,
    21/84 = 21 × 25/84 × 25 = 525/2100
  3. Likewise, for the 2nd fraction, since 25 × 84 = 2100,
    9/25 = 9 × 84/25 × 84 = 756/2100
  4. Add the two fractions:
    525/2100 + 756/2100 = 525 + 756/2100 = 1281/2100
  5. After reducing the fraction, the answer is 61/100

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