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Add 12/45 and 75/21

1st number: 12/45, 2nd number: 3 12/21

12/45 + 75/21 is 403/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 21 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 45 × 7 = 315,
    12/45 = 12 × 7/45 × 7 = 84/315
  3. Likewise, for the 2nd fraction, since 21 × 15 = 315,
    75/21 = 75 × 15/21 × 15 = 1125/315
  4. Add the two like fractions:
    84/315 + 1125/315 = 84 + 1125/315 = 1209/315
  5. 1209/315 simplified gives 403/105
  6. So, 12/45 + 75/21 = 403/105
    In mixed form: 388/105

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