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Add 21/56 and 20/60

21/56 + 20/60 is 17/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 60 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 56 × 15 = 840,
    21/56 = 21 × 15/56 × 15 = 315/840
  3. Likewise, for the 2nd fraction, since 60 × 14 = 840,
    20/60 = 20 × 14/60 × 14 = 280/840
  4. Add the two like fractions:
    315/840 + 280/840 = 315 + 280/840 = 595/840
  5. 595/840 simplified gives 17/24
  6. So, 21/56 + 20/60 = 17/24

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