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Subtract 16/49 from 6/21

6/21 - 16/49 is -2/49.

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,
    6/21 = 6 × 7/21 × 7 = 42/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    16/49 = 16 × 3/49 × 3 = 48/147
  4. Subtract the two like fractions:
    42/147 - 48/147 = 42 - 48/147 = -6/147
  5. After reducing the fraction, the answer is -2/49

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