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Add 81/90 and 20/98

81/90 + 20/98 is 541/490.

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,
    81/90 = 81 × 49/90 × 49 = 3969/4410
  3. Likewise, for the 2nd fraction, since 98 × 45 = 4410,
    20/98 = 20 × 45/98 × 45 = 900/4410
  4. Add the two like fractions:
    3969/4410 + 900/4410 = 3969 + 900/4410 = 4869/4410
  5. 4869/4410 simplified gives 541/490
  6. So, 81/90 + 20/98 = 541/490
    In mixed form: 151/490

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