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Subtract 42/30 from 10/84

1st number: 10/84, 2nd number: 1 12/30

10/84 - 42/30 is -269/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 30 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    10/84 = 10 × 5/84 × 5 = 50/420
  3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
    42/30 = 42 × 14/30 × 14 = 588/420
  4. Subtract the two fractions:
    50/420 - 588/420 = 50 - 588/420 = -538/420
  5. After reducing the fraction, the answer is -269/210

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