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Subtract 81/8 from 1/70

1st number: 1/70, 2nd number: 10 1/8

1/70 - 81/8 is -2831/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 8 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 70 × 4 = 280,
    1/70 = 1 × 4/70 × 4 = 4/280
  3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
    81/8 = 81 × 35/8 × 35 = 2835/280
  4. Subtract the two like fractions:
    4/280 - 2835/280 = 4 - 2835/280 = -2831/280

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