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Add 21/28 and 9/5

1st number: 21/28, 2nd number: 1 4/5

21/28 + 9/5 is 51/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 5 is 140
  2. For the 1st fraction, since 28 × 5 = 140,
    21/28 = 21 × 5/28 × 5 = 105/140
  3. Likewise, for the 2nd fraction, since 5 × 28 = 140,
    9/5 = 9 × 28/5 × 28 = 252/140
  4. Add the two fractions:
    105/140 + 252/140 = 105 + 252/140 = 357/140
  5. After reducing the fraction, the answer is 51/20
  6. In mixed form: 211/20

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