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Add 27/20 and 21/10

1st number: 1 7/20, 2nd number: 2 1/10

27/20 + 21/10 is 69/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 10 is 20
  2. For the 1st fraction, since 20 × 1 = 20,
    27/20 = 27 × 1/20 × 1 = 27/20
  3. Likewise, for the 2nd fraction, since 10 × 2 = 20,
    21/10 = 21 × 2/10 × 2 = 42/20
  4. Add the two fractions:
    27/20 + 42/20 = 27 + 42/20 = 69/20
  5. In mixed form: 39/20

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