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Add 30/36 and 21/30

30/36 + 21/30 is 23/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 30 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 36 × 5 = 180,
    30/36 = 30 × 5/36 × 5 = 150/180
  3. Likewise, for the 2nd fraction, since 30 × 6 = 180,
    21/30 = 21 × 6/30 × 6 = 126/180
  4. Add the two like fractions:
    150/180 + 126/180 = 150 + 126/180 = 276/180
  5. 276/180 simplified gives 23/15
  6. So, 30/36 + 21/30 = 23/15
    In mixed form: 18/15

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