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Add 90/28 and 81/90

1st number: 3 6/28, 2nd number: 81/90

90/28 + 81/90 is 144/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 90 is 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    90/28 = 90 × 45/28 × 45 = 4050/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    81/90 = 81 × 14/90 × 14 = 1134/1260
  4. Add the two fractions:
    4050/1260 + 1134/1260 = 4050 + 1134/1260 = 5184/1260
  5. 5184/1260 simplified gives 144/35
  6. So, 90/28 + 81/90 = 144/35
    In mixed form: 44/35

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