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Add 12/21 and 3/72

12/21 + 3/72 is 103/168.

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,
    12/21 = 12 × 24/21 × 24 = 288/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    3/72 = 3 × 7/72 × 7 = 21/504
  4. Add the two like fractions:
    288/504 + 21/504 = 288 + 21/504 = 309/504
  5. 309/504 simplified gives 103/168
  6. So, 12/21 + 3/72 = 103/168

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