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Add 81/4 and 30/45

1st number: 20 1/4, 2nd number: 30/45

81/4 + 30/45 is 251/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 45 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 4 × 45 = 180,
    81/4 = 81 × 45/4 × 45 = 3645/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    30/45 = 30 × 4/45 × 4 = 120/180
  4. Add the two like fractions:
    3645/180 + 120/180 = 3645 + 120/180 = 3765/180
  5. 3765/180 simplified gives 251/12
  6. So, 81/4 + 30/45 = 251/12
    In mixed form: 2011/12

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