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Add 90/28 and 12/30

1st number: 3 6/28, 2nd number: 12/30

90/28 + 12/30 is 253/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 30 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 28 × 15 = 420,
    90/28 = 90 × 15/28 × 15 = 1350/420
  3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
    12/30 = 12 × 14/30 × 14 = 168/420
  4. Add the two like fractions:
    1350/420 + 168/420 = 1350 + 168/420 = 1518/420
  5. 1518/420 simplified gives 253/70
  6. So, 90/28 + 12/30 = 253/70
    In mixed form: 343/70

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