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Subtract 28/80 from 75/70

1st number: 1 5/70, 2nd number: 28/80

75/70 - 28/80 is 101/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    75/70 = 75 × 8/70 × 8 = 600/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    28/80 = 28 × 7/80 × 7 = 196/560
  4. Subtract the two like fractions:
    600/560 - 196/560 = 600 - 196/560 = 404/560
  5. After reducing the fraction, the answer is 101/140

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