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Add 15/56 and 3/21

15/56 + 3/21 is 23/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 56 × 3 = 168,
    15/56 = 15 × 3/56 × 3 = 45/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    3/21 = 3 × 8/21 × 8 = 24/168
  4. Add the two like fractions:
    45/168 + 24/168 = 45 + 24/168 = 69/168
  5. 69/168 simplified gives 23/56
  6. So, 15/56 + 3/21 = 23/56

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