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Add 5/12 and 21/63

5/12 + 21/63 is 3/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 63 is 252
  2. For the 1st fraction, since 12 × 21 = 252,
    5/12 = 5 × 21/12 × 21 = 105/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    21/63 = 21 × 4/63 × 4 = 84/252
  4. Add the two fractions:
    105/252 + 84/252 = 105 + 84/252 = 189/252
  5. After reducing the fraction, the answer is 3/4

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