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Subtract 1/21 from 49/15

1st number: 3 4/15, 2nd number: 1/21

49/15 - 1/21 is 338/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    49/15 = 49 × 7/15 × 7 = 343/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    1/21 = 1 × 5/21 × 5 = 5/105
  4. Subtract the two like fractions:
    343/105 - 5/105 = 343 - 5/105 = 338/105
  5. In mixed form: 323/105

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