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Add 21/25 and 56/63

21/25 + 56/63 is 389/225.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 63 is 1575

    Next, find the equivalent fraction of both fractional numbers with denominator 1575
  2. For the 1st fraction, since 25 × 63 = 1575,
    21/25 = 21 × 63/25 × 63 = 1323/1575
  3. Likewise, for the 2nd fraction, since 63 × 25 = 1575,
    56/63 = 56 × 25/63 × 25 = 1400/1575
  4. Add the two like fractions:
    1323/1575 + 1400/1575 = 1323 + 1400/1575 = 2723/1575
  5. 2723/1575 simplified gives 389/225
  6. So, 21/25 + 56/63 = 389/225
    In mixed form: 1164/225

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