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Add 70/15 and 12/28

1st number: 4 10/15, 2nd number: 12/28

70/15 + 12/28 is 107/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 28 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    70/15 = 70 × 28/15 × 28 = 1960/420
  3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
    12/28 = 12 × 15/28 × 15 = 180/420
  4. Add the two like fractions:
    1960/420 + 180/420 = 1960 + 180/420 = 2140/420
  5. 2140/420 simplified gives 107/21
  6. So, 70/15 + 12/28 = 107/21
    In mixed form: 52/21

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