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Add 27/40 and 15/84

27/40 + 15/84 is 239/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    27/40 = 27 × 21/40 × 21 = 567/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    15/84 = 15 × 10/84 × 10 = 150/840
  4. Add the two like fractions:
    567/840 + 150/840 = 567 + 150/840 = 717/840
  5. 717/840 simplified gives 239/280
  6. So, 27/40 + 15/84 = 239/280

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