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Subtract 3/30 from 16/21

16/21 - 3/30 is 139/210.

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,
    16/21 = 16 × 10/21 × 10 = 160/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    3/30 = 3 × 7/30 × 7 = 21/210
  4. Subtract the two like fractions:
    160/210 - 21/210 = 160 - 21/210 = 139/210

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