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Add 5/15 and 21/98

5/15 + 21/98 is 23/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 98 is 1470

    Next, find the equivalent fraction of both fractional numbers with denominator 1470
  2. For the 1st fraction, since 15 × 98 = 1470,
    5/15 = 5 × 98/15 × 98 = 490/1470
  3. Likewise, for the 2nd fraction, since 98 × 15 = 1470,
    21/98 = 21 × 15/98 × 15 = 315/1470
  4. Add the two like fractions:
    490/1470 + 315/1470 = 490 + 315/1470 = 805/1470
  5. 805/1470 simplified gives 23/42
  6. So, 5/15 + 21/98 = 23/42

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