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Subtract 15/7 from 3/5

1st number: 3/5, 2nd number: 2 1/7

3/5 - 15/7 is -54/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 7 is 35

    Next, find the equivalent fraction of both fractional numbers with denominator 35
  2. For the 1st fraction, since 5 × 7 = 35,
    3/5 = 3 × 7/5 × 7 = 21/35
  3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
    15/7 = 15 × 5/7 × 5 = 75/35
  4. Subtract the two like fractions:
    21/35 - 75/35 = 21 - 75/35 = -54/35

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