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Add 10/15 and 21/36

10/15 + 21/36 is 5/4.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 15 × 12 = 180,
    10/15 = 10 × 12/15 × 12 = 120/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    21/36 = 21 × 5/36 × 5 = 105/180
  4. Add the two like fractions:
    120/180 + 105/180 = 120 + 105/180 = 225/180
  5. 225/180 simplified gives 5/4
  6. So, 10/15 + 21/36 = 5/4
    In mixed form: 11/4

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