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Add 84/12 and 5/40

1st number: 7 0/12, 2nd number: 5/40

84/12 + 5/40 is 57/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 40 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 12 × 10 = 120,
    84/12 = 84 × 10/12 × 10 = 840/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    5/40 = 5 × 3/40 × 3 = 15/120
  4. Add the two like fractions:
    840/120 + 15/120 = 840 + 15/120 = 855/120
  5. 855/120 simplified gives 57/8
  6. So, 84/12 + 5/40 = 57/8
    In mixed form: 71/8

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