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Add 8/21 and 84/45

1st number: 8/21, 2nd number: 1 39/45

8/21 + 84/45 is 236/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315
  2. For the 1st fraction, since 21 × 15 = 315,
    8/21 = 8 × 15/21 × 15 = 120/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    84/45 = 84 × 7/45 × 7 = 588/315
  4. Add the two fractions:
    120/315 + 588/315 = 120 + 588/315 = 708/315
  5. After reducing the fraction, the answer is 236/105
  6. In mixed form: 226/105

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