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Add 27/4 and 21/20

1st number: 6 3/4, 2nd number: 1 1/20

27/4 + 21/20 is 39/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 20 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    27/4 = 27 × 5/4 × 5 = 135/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    21/20 = 21 × 1/20 × 1 = 21/20
  4. Add the two like fractions:
    135/20 + 21/20 = 135 + 21/20 = 156/20
  5. 156/20 simplified gives 39/5
  6. So, 27/4 + 21/20 = 39/5
    In mixed form: 74/5

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