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Subtract 49/30 from 1/21

1st number: 1/21, 2nd number: 1 19/30

1/21 - 49/30 is -111/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    1/21 = 1 × 10/21 × 10 = 10/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    49/30 = 49 × 7/30 × 7 = 343/210
  4. Subtract the two like fractions:
    10/210 - 343/210 = 10 - 343/210 = -333/210
  5. After reducing the fraction, the answer is -111/70

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