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Add 63/21 and 12/80

1st number: 3 0/21, 2nd number: 12/80

63/21 + 12/80 is 63/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    63/21 = 63 × 80/21 × 80 = 5040/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    12/80 = 12 × 21/80 × 21 = 252/1680
  4. Add the two fractions:
    5040/1680 + 252/1680 = 5040 + 252/1680 = 5292/1680
  5. 5292/1680 simplified gives 63/20
  6. So, 63/21 + 12/80 = 63/20
    In mixed form: 33/20

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