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Subtract 12/80 from 15/7

1st number: 2 1/7, 2nd number: 12/80

15/7 - 12/80 is 279/140.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 7 × 80 = 560,
    15/7 = 15 × 80/7 × 80 = 1200/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    12/80 = 12 × 7/80 × 7 = 84/560
  4. Subtract the two like fractions:
    1200/560 - 84/560 = 1200 - 84/560 = 1116/560
  5. After reducing the fraction, the answer is 279/140
  6. In mixed form: 1139/140

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