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Add 84/7 and 81/40

1st number: 12 0/7, 2nd number: 2 1/40

84/7 + 81/40 is 561/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 7 × 40 = 280,
    84/7 = 84 × 40/7 × 40 = 3360/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    81/40 = 81 × 7/40 × 7 = 567/280
  4. Add the two like fractions:
    3360/280 + 567/280 = 3360 + 567/280 = 3927/280
  5. 3927/280 simplified gives 561/40
  6. So, 84/7 + 81/40 = 561/40
    In mixed form: 141/40

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