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Subtract 1/49 from 9/21

9/21 - 1/49 is 20/49.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 49 is 147

    Next, find the equivalent fraction of both fractional numbers with denominator 147
  2. For the 1st fraction, since 21 × 7 = 147,
    9/21 = 9 × 7/21 × 7 = 63/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    1/49 = 1 × 3/49 × 3 = 3/147
  4. Subtract the two like fractions:
    63/147 - 3/147 = 63 - 3/147 = 60/147
  5. After reducing the fraction, the answer is 20/49

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