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Subtract 42/50 from 72/98

72/98 - 42/50 is -129/1225.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 50 is 2450
  2. For the 1st fraction, since 98 × 25 = 2450,
    72/98 = 72 × 25/98 × 25 = 1800/2450
  3. Likewise, for the 2nd fraction, since 50 × 49 = 2450,
    42/50 = 42 × 49/50 × 49 = 2058/2450
  4. Subtract the two fractions:
    1800/2450 - 2058/2450 = 1800 - 2058/2450 = -258/2450
  5. After reducing the fraction, the answer is -129/1225

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