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Subtract 40/98 from 10/21

10/21 - 40/98 is 10/147.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 98 is 294
  2. For the 1st fraction, since 21 × 14 = 294,
    10/21 = 10 × 14/21 × 14 = 140/294
  3. Likewise, for the 2nd fraction, since 98 × 3 = 294,
    40/98 = 40 × 3/98 × 3 = 120/294
  4. Subtract the two fractions:
    140/294 - 120/294 = 140 - 120/294 = 20/294
  5. After reducing the fraction, the answer is 10/147

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