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Add 21/15 and 20/30

1st number: 1 6/15, 2nd number: 20/30

21/15 + 20/30 is 31/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 30 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 15 × 2 = 30,
    21/15 = 21 × 2/15 × 2 = 42/30
  3. Likewise, for the 2nd fraction, since 30 × 1 = 30,
    20/30 = 20 × 1/30 × 1 = 20/30
  4. Add the two like fractions:
    42/30 + 20/30 = 42 + 20/30 = 62/30
  5. 62/30 simplified gives 31/15
  6. So, 21/15 + 20/30 = 31/15
    In mixed form: 21/15

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