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Add 21/84 and 30/7

1st number: 21/84, 2nd number: 4 2/7

21/84 + 30/7 is 127/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 7 is 84
  2. For the 1st fraction, since 84 × 1 = 84,
    21/84 = 21 × 1/84 × 1 = 21/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    30/7 = 30 × 12/7 × 12 = 360/84
  4. Add the two fractions:
    21/84 + 360/84 = 21 + 360/84 = 381/84
  5. After reducing the fraction, the answer is 127/28
  6. In mixed form: 415/28

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