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Add 21/72 and 7/75

21/72 + 7/75 is 77/200.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 75 is 1800

    Next, find the equivalent fraction of both fractional numbers with denominator 1800
  2. For the 1st fraction, since 72 × 25 = 1800,
    21/72 = 21 × 25/72 × 25 = 525/1800
  3. Likewise, for the 2nd fraction, since 75 × 24 = 1800,
    7/75 = 7 × 24/75 × 24 = 168/1800
  4. Add the two like fractions:
    525/1800 + 168/1800 = 525 + 168/1800 = 693/1800
  5. 693/1800 simplified gives 77/200
  6. So, 21/72 + 7/75 = 77/200

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