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Add 15/16 and 42/63

15/16 + 42/63 is 77/48.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 63 is 1008

    Next, find the equivalent fraction of both fractional numbers with denominator 1008
  2. For the 1st fraction, since 16 × 63 = 1008,
    15/16 = 15 × 63/16 × 63 = 945/1008
  3. Likewise, for the 2nd fraction, since 63 × 16 = 1008,
    42/63 = 42 × 16/63 × 16 = 672/1008
  4. Add the two like fractions:
    945/1008 + 672/1008 = 945 + 672/1008 = 1617/1008
  5. 1617/1008 simplified gives 77/48
  6. So, 15/16 + 42/63 = 77/48
    In mixed form: 129/48

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