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Subtract 6/70 from 1/21

1/21 - 6/70 is -4/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 70 is 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 70 × 3 = 210,
    6/70 = 6 × 3/70 × 3 = 18/210
  4. Subtract the two fractions:
    10/210 - 18/210 = 10 - 18/210 = -8/210
  5. After reducing the fraction, the answer is -4/105

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