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Add 15/90 and 42/98

15/90 + 42/98 is 25/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 98 is 4410

    Next, find the equivalent fraction of both fractional numbers with denominator 4410
  2. For the 1st fraction, since 90 × 49 = 4410,
    15/90 = 15 × 49/90 × 49 = 735/4410
  3. Likewise, for the 2nd fraction, since 98 × 45 = 4410,
    42/98 = 42 × 45/98 × 45 = 1890/4410
  4. Add the two like fractions:
    735/4410 + 1890/4410 = 735 + 1890/4410 = 2625/4410
  5. 2625/4410 simplified gives 25/42
  6. So, 15/90 + 42/98 = 25/42

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