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Subtract 28/50 from 15/70

15/70 - 28/50 is -121/350.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 50 is 350
  2. For the 1st fraction, since 70 × 5 = 350,
    15/70 = 15 × 5/70 × 5 = 75/350
  3. Likewise, for the 2nd fraction, since 50 × 7 = 350,
    28/50 = 28 × 7/50 × 7 = 196/350
  4. Subtract the two fractions:
    75/350 - 196/350 = 75 - 196/350 = -121/350

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