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Add 30/15 and 21/20

1st number: 2 0/15, 2nd number: 1 1/20

30/15 + 21/20 is 61/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 20 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    30/15 = 30 × 4/15 × 4 = 120/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    21/20 = 21 × 3/20 × 3 = 63/60
  4. Add the two fractions:
    120/60 + 63/60 = 120 + 63/60 = 183/60
  5. 183/60 simplified gives 61/20
  6. So, 30/15 + 21/20 = 61/20
    In mixed form: 31/20

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