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Add 72/45 and 12/20

1st number: 1 27/45, 2nd number: 12/20

72/45 + 12/20 is 11/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    72/45 = 72 × 4/45 × 4 = 288/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    12/20 = 12 × 9/20 × 9 = 108/180
  4. Add the two like fractions:
    288/180 + 108/180 = 288 + 108/180 = 396/180
  5. 396/180 simplified gives 11/5
  6. So, 72/45 + 12/20 = 11/5
    In mixed form: 21/5

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