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Add 21/36 and 27/15

1st number: 21/36, 2nd number: 1 12/15

21/36 + 27/15 is 143/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 15 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 36 × 5 = 180,
    21/36 = 21 × 5/36 × 5 = 105/180
  3. Likewise, for the 2nd fraction, since 15 × 12 = 180,
    27/15 = 27 × 12/15 × 12 = 324/180
  4. Add the two like fractions:
    105/180 + 324/180 = 105 + 324/180 = 429/180
  5. 429/180 simplified gives 143/60
  6. So, 21/36 + 27/15 = 143/60
    In mixed form: 223/60

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