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Add 5/4 and 72/20

1st number: 1 1/4, 2nd number: 3 12/20

5/4 + 72/20 is 97/20.

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,
    5/4 = 5 × 5/4 × 5 = 25/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    72/20 = 72 × 1/20 × 1 = 72/20
  4. Add the two like fractions:
    25/20 + 72/20 = 25 + 72/20 = 97/20
  5. So, 5/4 + 72/20 = 97/20
    In mixed form: 417/20

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