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Add 21/75 and 10/63

21/75 + 10/63 is 691/1575.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 63 is 1575
  2. For the 1st fraction, since 75 × 21 = 1575,
    21/75 = 21 × 21/75 × 21 = 441/1575
  3. Likewise, for the 2nd fraction, since 63 × 25 = 1575,
    10/63 = 10 × 25/63 × 25 = 250/1575
  4. Add the two fractions:
    441/1575 + 250/1575 = 441 + 250/1575 = 691/1575

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