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Subtract 1/8 from 42/70

42/70 - 1/8 is 19/40.

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,
    42/70 = 42 × 4/70 × 4 = 168/280
  3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
    1/8 = 1 × 35/8 × 35 = 35/280
  4. Subtract the two like fractions:
    168/280 - 35/280 = 168 - 35/280 = 133/280
  5. After reducing the fraction, the answer is 19/40

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