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Subtract 10/30 from 3/7

3/7 - 10/30 is 2/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 7 × 30 = 210,
    3/7 = 3 × 30/7 × 30 = 90/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    10/30 = 10 × 7/30 × 7 = 70/210
  4. Subtract the two like fractions:
    90/210 - 70/210 = 90 - 70/210 = 20/210
  5. After reducing the fraction, the answer is 2/21

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