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Add 90/63 and 28/15

1st number: 1 27/63, 2nd number: 1 13/15

90/63 + 28/15 is 346/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 15 is 315
  2. For the 1st fraction, since 63 × 5 = 315,
    90/63 = 90 × 5/63 × 5 = 450/315
  3. Likewise, for the 2nd fraction, since 15 × 21 = 315,
    28/15 = 28 × 21/15 × 21 = 588/315
  4. Add the two fractions:
    450/315 + 588/315 = 450 + 588/315 = 1038/315
  5. 1038/315 simplified gives 346/105
  6. So, 90/63 + 28/15 = 346/105
    In mixed form: 331/105

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