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Add 80/84 and 81/72

1st number: 80/84, 2nd number: 1 9/72

80/84 + 81/72 is 349/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 72 is 504
  2. For the 1st fraction, since 84 × 6 = 504,
    80/84 = 80 × 6/84 × 6 = 480/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    81/72 = 81 × 7/72 × 7 = 567/504
  4. Add the two fractions:
    480/504 + 567/504 = 480 + 567/504 = 1047/504
  5. 1047/504 simplified gives 349/168
  6. So, 80/84 + 81/72 = 349/168
    In mixed form: 213/168

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