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Add 20/15 and 84/12

1st number: 1 5/15, 2nd number: 7 0/12

20/15 + 84/12 is 25/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 12 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 15 × 4 = 60,
    20/15 = 20 × 4/15 × 4 = 80/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    84/12 = 84 × 5/12 × 5 = 420/60
  4. Add the two like fractions:
    80/60 + 420/60 = 80 + 420/60 = 500/60
  5. 500/60 simplified gives 25/3
  6. So, 20/15 + 84/12 = 25/3
    In mixed form: 81/3

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