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Add 3/20 and 21/18

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

3/20 + 21/18 is 79/60.

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,
    3/20 = 3 × 9/20 × 9 = 27/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    21/18 = 21 × 10/18 × 10 = 210/180
  4. Add the two like fractions:
    27/180 + 210/180 = 27 + 210/180 = 237/180
  5. 237/180 simplified gives 79/60
  6. So, 3/20 + 21/18 = 79/60
    In mixed form: 119/60

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