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Add 16/21 and 21/72

16/21 + 21/72 is 59/56.

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,
    16/21 = 16 × 24/21 × 24 = 384/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    21/72 = 21 × 7/72 × 7 = 147/504
  4. Add the two like fractions:
    384/504 + 147/504 = 384 + 147/504 = 531/504
  5. 531/504 simplified gives 59/56
  6. So, 16/21 + 21/72 = 59/56
    In mixed form: 13/56

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