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Add 90/98 and 18/20

90/98 + 18/20 is 891/490.

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,
    90/98 = 90 × 10/98 × 10 = 900/980
  3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
    18/20 = 18 × 49/20 × 49 = 882/980
  4. Add the two like fractions:
    900/980 + 882/980 = 900 + 882/980 = 1782/980
  5. 1782/980 simplified gives 891/490
  6. So, 90/98 + 18/20 = 891/490
    In mixed form: 1401/490

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