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Add 21/24 and 15/75

21/24 + 15/75 is 43/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 75 is 600

    Next, find the equivalent fraction of both fractional numbers with denominator 600
  2. For the 1st fraction, since 24 × 25 = 600,
    21/24 = 21 × 25/24 × 25 = 525/600
  3. Likewise, for the 2nd fraction, since 75 × 8 = 600,
    15/75 = 15 × 8/75 × 8 = 120/600
  4. Add the two like fractions:
    525/600 + 120/600 = 525 + 120/600 = 645/600
  5. 645/600 simplified gives 43/40
  6. So, 21/24 + 15/75 = 43/40
    In mixed form: 13/40

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