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Add 81/20 and 21/4

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

81/20 + 21/4 is 93/10.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 20 × 1 = 20,
    81/20 = 81 × 1/20 × 1 = 81/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    21/4 = 21 × 5/4 × 5 = 105/20
  4. Add the two like fractions:
    81/20 + 105/20 = 81 + 105/20 = 186/20
  5. 186/20 simplified gives 93/10
  6. So, 81/20 + 21/4 = 93/10
    In mixed form: 93/10

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