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Add 81/21 and 6/63

1st number: 3 18/21, 2nd number: 6/63

81/21 + 6/63 is 83/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 63 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    81/21 = 81 × 3/21 × 3 = 243/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    6/63 = 6 × 1/63 × 1 = 6/63
  4. Add the two fractions:
    243/63 + 6/63 = 243 + 6/63 = 249/63
  5. 249/63 simplified gives 83/21
  6. So, 81/21 + 6/63 = 83/21
    In mixed form: 320/21

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