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Subtract 98/80 from 42/75

1st number: 42/75, 2nd number: 1 18/80

42/75 - 98/80 is -133/200.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 80 is 1200

    Next, find the equivalent fraction of both fractional numbers with denominator 1200
  2. For the 1st fraction, since 75 × 16 = 1200,
    42/75 = 42 × 16/75 × 16 = 672/1200
  3. Likewise, for the 2nd fraction, since 80 × 15 = 1200,
    98/80 = 98 × 15/80 × 15 = 1470/1200
  4. Subtract the two like fractions:
    672/1200 - 1470/1200 = 672 - 1470/1200 = -798/1200
  5. After reducing the fraction, the answer is -133/200

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