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Add 21/56 and 8/20

21/56 + 8/20 is 31/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 20 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 56 × 5 = 280,
    21/56 = 21 × 5/56 × 5 = 105/280
  3. Likewise, for the 2nd fraction, since 20 × 14 = 280,
    8/20 = 8 × 14/20 × 14 = 112/280
  4. Add the two like fractions:
    105/280 + 112/280 = 105 + 112/280 = 217/280
  5. 217/280 simplified gives 31/40
  6. So, 21/56 + 8/20 = 31/40

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