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Subtract 40/98 from 30/42

30/42 - 40/98 is 15/49.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 98 is 294
  2. For the 1st fraction, since 42 × 7 = 294,
    30/42 = 30 × 7/42 × 7 = 210/294
  3. Likewise, for the 2nd fraction, since 98 × 3 = 294,
    40/98 = 40 × 3/98 × 3 = 120/294
  4. Subtract the two fractions:
    210/294 - 120/294 = 210 - 120/294 = 90/294
  5. After reducing the fraction, the answer is 15/49

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