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Add 5/16 and 21/63

5/16 + 21/63 is 31/48.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 63 is 1008
  2. For the 1st fraction, since 16 × 63 = 1008,
    5/16 = 5 × 63/16 × 63 = 315/1008
  3. Likewise, for the 2nd fraction, since 63 × 16 = 1008,
    21/63 = 21 × 16/63 × 16 = 336/1008
  4. Add the two fractions:
    315/1008 + 336/1008 = 315 + 336/1008 = 651/1008
  5. After reducing the fraction, the answer is 31/48

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