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Add 42/98 and 15/20

42/98 + 15/20 is 33/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 20 is 980

    Next, find the equivalent fraction of both fractional numbers with denominator 980
  2. For the 1st fraction, since 98 × 10 = 980,
    42/98 = 42 × 10/98 × 10 = 420/980
  3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
    15/20 = 15 × 49/20 × 49 = 735/980
  4. Add the two like fractions:
    420/980 + 735/980 = 420 + 735/980 = 1155/980
  5. 1155/980 simplified gives 33/28
  6. So, 42/98 + 15/20 = 33/28
    In mixed form: 15/28

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