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Add 21/25 and 9/80

21/25 + 9/80 is 381/400.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 80 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 25 × 16 = 400,
    21/25 = 21 × 16/25 × 16 = 336/400
  3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
    9/80 = 9 × 5/80 × 5 = 45/400
  4. Add the two like fractions:
    336/400 + 45/400 = 336 + 45/400 = 381/400
  5. So, 21/25 + 9/80 = 381/400

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