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Add 5/21 and 28/49

5/21 + 28/49 is 17/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 49 is 147

    Next, find the equivalent fraction of both fractional numbers with denominator 147
  2. For the 1st fraction, since 21 × 7 = 147,
    5/21 = 5 × 7/21 × 7 = 35/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    28/49 = 28 × 3/49 × 3 = 84/147
  4. Add the two like fractions:
    35/147 + 84/147 = 35 + 84/147 = 119/147
  5. 119/147 simplified gives 17/21
  6. So, 5/21 + 28/49 = 17/21

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