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Add 28/42 and 12/72

28/42 + 12/72 is 5/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 42 × 12 = 504,
    28/42 = 28 × 12/42 × 12 = 336/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    12/72 = 12 × 7/72 × 7 = 84/504
  4. Add the two like fractions:
    336/504 + 84/504 = 336 + 84/504 = 420/504
  5. 420/504 simplified gives 5/6
  6. So, 28/42 + 12/72 = 5/6

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