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Add 9/20 and 28/49

9/20 + 28/49 is 143/140.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 980
  2. For the 1st fraction, since 20 × 49 = 980,
    9/20 = 9 × 49/20 × 49 = 441/980
  3. Likewise, for the 2nd fraction, since 49 × 20 = 980,
    28/49 = 28 × 20/49 × 20 = 560/980
  4. Add the two like fractions:
    441/980 + 560/980 = 441 + 560/980 = 1001/980
  5. 1001/980 simplified gives 143/140
  6. So, 9/20 + 28/49 = 143/140
    In mixed form: 13/140

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