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Subtract 21/6 from 10/15

1st number: 10/15, 2nd number: 3 3/6

10/15 - 21/6 is -17/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 6 is 30
  2. For the 1st fraction, since 15 × 2 = 30,
    10/15 = 10 × 2/15 × 2 = 20/30
  3. Likewise, for the 2nd fraction, since 6 × 5 = 30,
    21/6 = 21 × 5/6 × 5 = 105/30
  4. Subtract the two fractions:
    20/30 - 105/30 = 20 - 105/30 = -85/30
  5. After reducing the fraction, the answer is -17/6

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