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Add 21/20 and 9/5

1st number: 1 1/20, 2nd number: 1 4/5

21/20 + 9/5 is 57/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 20 × 1 = 20,
    21/20 = 21 × 1/20 × 1 = 21/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    9/5 = 9 × 4/5 × 4 = 36/20
  4. Add the two like fractions:
    21/20 + 36/20 = 21 + 36/20 = 57/20
  5. So, 21/20 + 9/5 = 57/20
    In mixed form: 217/20

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