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Add 30/56 and 21/63

30/56 + 21/63 is 73/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 63 is 504
  2. For the 1st fraction, since 56 × 9 = 504,
    30/56 = 30 × 9/56 × 9 = 270/504
  3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
    21/63 = 21 × 8/63 × 8 = 168/504
  4. Add the two fractions:
    270/504 + 168/504 = 270 + 168/504 = 438/504
  5. After reducing the fraction, the answer is 73/84

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