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Add 21/12 and 7/56

1st number: 1 9/12, 2nd number: 7/56

21/12 + 7/56 is 15/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 56 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 12 × 14 = 168,
    21/12 = 21 × 14/12 × 14 = 294/168
  3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
    7/56 = 7 × 3/56 × 3 = 21/168
  4. Add the two like fractions:
    294/168 + 21/168 = 294 + 21/168 = 315/168
  5. 315/168 simplified gives 15/8
  6. So, 21/12 + 7/56 = 15/8
    In mixed form: 17/8

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