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Add 72/20 and 1/18

1st number: 3 12/20, 2nd number: 1/18

72/20 + 1/18 is 329/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    72/20 = 72 × 9/20 × 9 = 648/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    1/18 = 1 × 10/18 × 10 = 10/180
  4. Add the two like fractions:
    648/180 + 10/180 = 648 + 10/180 = 658/180
  5. 658/180 simplified gives 329/90
  6. So, 72/20 + 1/18 = 329/90
    In mixed form: 359/90

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