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Subtract 12/10 from 25/84

1st number: 25/84, 2nd number: 1 2/10

25/84 - 12/10 is -379/420.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 10 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    25/84 = 25 × 5/84 × 5 = 125/420
  3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
    12/10 = 12 × 42/10 × 42 = 504/420
  4. Subtract the two fractions:
    125/420 - 504/420 = 125 - 504/420 = -379/420

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