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Add 81/20 and 12/10

1st number: 4 1/20, 2nd number: 1 2/10

81/20 + 12/10 is 21/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 10 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 10 × 2 = 20,
    12/10 = 12 × 2/10 × 2 = 24/20
  4. Add the two like fractions:
    81/20 + 24/20 = 81 + 24/20 = 105/20
  5. 105/20 simplified gives 21/4
  6. So, 81/20 + 12/10 = 21/4
    In mixed form: 51/4

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