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Subtract 1/70 from 20/80

20/80 - 1/70 is 33/140.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    20/80 = 20 × 7/80 × 7 = 140/560
  3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
    1/70 = 1 × 8/70 × 8 = 8/560
  4. Subtract the two like fractions:
    140/560 - 8/560 = 140 - 8/560 = 132/560
  5. After reducing the fraction, the answer is 33/140

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