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Subtract 12/10 from 5/84

1st number: 5/84, 2nd number: 1 2/10

5/84 - 12/10 is -479/420.

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,
    5/84 = 5 × 5/84 × 5 = 25/420
  3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
    12/10 = 12 × 42/10 × 42 = 504/420
  4. Subtract the two fractions:
    25/420 - 504/420 = 25 - 504/420 = -479/420

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