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Add 72/20 and 7/4

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

72/20 + 7/4 is 107/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 4 is 20
  2. For the 1st fraction, since 20 × 1 = 20,
    72/20 = 72 × 1/20 × 1 = 72/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    7/4 = 7 × 5/4 × 5 = 35/20
  4. Add the two fractions:
    72/20 + 35/20 = 72 + 35/20 = 107/20
  5. So, 72/20 + 7/4 = 107/20
    In mixed form: 57/20

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