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Add 30/25 and 81/20

1st number: 1 5/25, 2nd number: 4 1/20

30/25 + 81/20 is 21/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 20 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 25 × 4 = 100,
    30/25 = 30 × 4/25 × 4 = 120/100
  3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
    81/20 = 81 × 5/20 × 5 = 405/100
  4. Add the two like fractions:
    120/100 + 405/100 = 120 + 405/100 = 525/100
  5. 525/100 simplified gives 21/4
  6. So, 30/25 + 81/20 = 21/4
    In mixed form: 51/4

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