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Add 81/90 and 45/28

1st number: 81/90, 2nd number: 1 17/28

81/90 + 45/28 is 351/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 28 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 90 × 14 = 1260,
    81/90 = 81 × 14/90 × 14 = 1134/1260
  3. Likewise, for the 2nd fraction, since 28 × 45 = 1260,
    45/28 = 45 × 45/28 × 45 = 2025/1260
  4. Add the two like fractions:
    1134/1260 + 2025/1260 = 1134 + 2025/1260 = 3159/1260
  5. 3159/1260 simplified gives 351/140
  6. So, 81/90 + 45/28 = 351/140
    In mixed form: 271/140

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