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Add 21/90 and 9/98

21/90 + 9/98 is 239/735.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 98 is 4410
  2. For the 1st fraction, since 90 × 49 = 4410,
    21/90 = 21 × 49/90 × 49 = 1029/4410
  3. Likewise, for the 2nd fraction, since 98 × 45 = 4410,
    9/98 = 9 × 45/98 × 45 = 405/4410
  4. Add the two fractions:
    1029/4410 + 405/4410 = 1029 + 405/4410 = 1434/4410
  5. After reducing the fraction, the answer is 239/735

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