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Add 81/90 and 70/98

81/90 + 70/98 is 113/70.

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,
    70/98 = 70 × 45/98 × 45 = 3150/4410
  4. Add the two like fractions:
    3969/4410 + 3150/4410 = 3969 + 3150/4410 = 7119/4410
  5. 7119/4410 simplified gives 113/70
  6. So, 81/90 + 70/98 = 113/70
    In mixed form: 143/70

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