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Add 84/15 and 80/84

1st number: 5 9/15, 2nd number: 80/84

84/15 + 80/84 is 688/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 84 is 420
  2. For the 1st fraction, since 15 × 28 = 420,
    84/15 = 84 × 28/15 × 28 = 2352/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    80/84 = 80 × 5/84 × 5 = 400/420
  4. Add the two fractions:
    2352/420 + 400/420 = 2352 + 400/420 = 2752/420
  5. 2752/420 simplified gives 688/105
  6. So, 84/15 + 80/84 = 688/105
    In mixed form: 658/105

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