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Subtract 12/7 from 7/30

1st number: 7/30, 2nd number: 1 5/7

7/30 - 12/7 is -311/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 7 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    7/30 = 7 × 7/30 × 7 = 49/210
  3. Likewise, for the 2nd fraction, since 7 × 30 = 210,
    12/7 = 12 × 30/7 × 30 = 360/210
  4. Subtract the two like fractions:
    49/210 - 360/210 = 49 - 360/210 = -311/210

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