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Add 21/56 and 3/35

21/56 + 3/35 is 129/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 35 is 280
  2. For the 1st fraction, since 56 × 5 = 280,
    21/56 = 21 × 5/56 × 5 = 105/280
  3. Likewise, for the 2nd fraction, since 35 × 8 = 280,
    3/35 = 3 × 8/35 × 8 = 24/280
  4. Add the two fractions:
    105/280 + 24/280 = 105 + 24/280 = 129/280

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