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Subtract 15/7 from 3/80

1st number: 3/80, 2nd number: 2 1/7

3/80 - 15/7 is -1179/560.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 7 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    3/80 = 3 × 7/80 × 7 = 21/560
  3. Likewise, for the 2nd fraction, since 7 × 80 = 560,
    15/7 = 15 × 80/7 × 80 = 1200/560
  4. Subtract the two like fractions:
    21/560 - 1200/560 = 21 - 1200/560 = -1179/560

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