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Add 2/84 and 21/40

2/84 + 21/40 is 461/840.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 40 is 840
  2. For the 1st fraction, since 84 × 10 = 840,
    2/84 = 2 × 10/84 × 10 = 20/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    21/40 = 21 × 21/40 × 21 = 441/840
  4. Add the two fractions:
    20/840 + 441/840 = 20 + 441/840 = 461/840

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