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Subtract 90/24 from 15/70

1st number: 15/70, 2nd number: 3 18/24

15/70 - 90/24 is -99/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 24 is 840
  2. For the 1st fraction, since 70 × 12 = 840,
    15/70 = 15 × 12/70 × 12 = 180/840
  3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
    90/24 = 90 × 35/24 × 35 = 3150/840
  4. Subtract the two fractions:
    180/840 - 3150/840 = 180 - 3150/840 = -2970/840
  5. After reducing the fraction, the answer is -99/28

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