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Add 84/4 and 30/21

1st number: 21 0/4, 2nd number: 1 9/21

84/4 + 30/21 is 157/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84
  2. For the 1st fraction, since 4 × 21 = 84,
    84/4 = 84 × 21/4 × 21 = 1764/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    30/21 = 30 × 4/21 × 4 = 120/84
  4. Add the two fractions:
    1764/84 + 120/84 = 1764 + 120/84 = 1884/84
  5. 1884/84 simplified gives 157/7
  6. So, 84/4 + 30/21 = 157/7
    In mixed form: 223/7

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