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Add 21/18 and 72/60

1st number: 1 3/18, 2nd number: 1 12/60

21/18 + 72/60 is 71/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 60 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    21/18 = 21 × 10/18 × 10 = 210/180
  3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
    72/60 = 72 × 3/60 × 3 = 216/180
  4. Add the two like fractions:
    210/180 + 216/180 = 210 + 216/180 = 426/180
  5. 426/180 simplified gives 71/30
  6. So, 21/18 + 72/60 = 71/30
    In mixed form: 211/30

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