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Subtract 28/40 from 75/70

1st number: 1 5/70, 2nd number: 28/40

75/70 - 28/40 is 13/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 40 is 280
  2. For the 1st fraction, since 70 × 4 = 280,
    75/70 = 75 × 4/70 × 4 = 300/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    28/40 = 28 × 7/40 × 7 = 196/280
  4. Subtract the two fractions:
    300/280 - 196/280 = 300 - 196/280 = 104/280
  5. After reducing the fraction, the answer is 13/35

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