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Add 12/15 and 75/21

1st number: 12/15, 2nd number: 3 12/21

12/15 + 75/21 is 153/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    12/15 = 12 × 7/15 × 7 = 84/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    75/21 = 75 × 5/21 × 5 = 375/105
  4. Add the two like fractions:
    84/105 + 375/105 = 84 + 375/105 = 459/105
  5. 459/105 simplified gives 153/35
  6. So, 12/15 + 75/21 = 153/35
    In mixed form: 413/35

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