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Add 14/21 and 45/72

14/21 + 45/72 is 31/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 21 × 24 = 504,
    14/21 = 14 × 24/21 × 24 = 336/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    45/72 = 45 × 7/72 × 7 = 315/504
  4. Add the two like fractions:
    336/504 + 315/504 = 336 + 315/504 = 651/504
  5. 651/504 simplified gives 31/24
  6. So, 14/21 + 45/72 = 31/24
    In mixed form: 17/24

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