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Subtract 1/40 from 7/8

7/8 - 1/40 is 17/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 8 × 5 = 40,
    7/8 = 7 × 5/8 × 5 = 35/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    1/40 = 1 × 1/40 × 1 = 1/40
  4. Subtract the two like fractions:
    35/40 - 1/40 = 35 - 1/40 = 34/40
  5. After reducing the fraction, the answer is 17/20

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