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Subtract 21/27 from 15/6

1st number: 2 3/6, 2nd number: 21/27

15/6 - 21/27 is 31/18.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 27 is 54
  2. For the 1st fraction, since 6 × 9 = 54,
    15/6 = 15 × 9/6 × 9 = 135/54
  3. Likewise, for the 2nd fraction, since 27 × 2 = 54,
    21/27 = 21 × 2/27 × 2 = 42/54
  4. Subtract the two fractions:
    135/54 - 42/54 = 135 - 42/54 = 93/54
  5. After reducing the fraction, the answer is 31/18
  6. In mixed form: 113/18

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