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Subtract 15/6 from 49/21

1st number: 2 7/21, 2nd number: 2 3/6

49/21 - 15/6 is -1/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 6 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    49/21 = 49 × 2/21 × 2 = 98/42
  3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
    15/6 = 15 × 7/6 × 7 = 105/42
  4. Subtract the two like fractions:
    98/42 - 105/42 = 98 - 105/42 = -7/42
  5. After reducing the fraction, the answer is -1/6

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