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Add 21/49 and 5/20

21/49 + 5/20 is 19/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 20 is 980

    Next, find the equivalent fraction of both fractional numbers with denominator 980
  2. For the 1st fraction, since 49 × 20 = 980,
    21/49 = 21 × 20/49 × 20 = 420/980
  3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
    5/20 = 5 × 49/20 × 49 = 245/980
  4. Add the two like fractions:
    420/980 + 245/980 = 420 + 245/980 = 665/980
  5. 665/980 simplified gives 19/28
  6. So, 21/49 + 5/20 = 19/28

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