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Subtract 7/10 from 4/30

4/30 - 7/10 is -17/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 10 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 30 × 1 = 30,
    4/30 = 4 × 1/30 × 1 = 4/30
  3. Likewise, for the 2nd fraction, since 10 × 3 = 30,
    7/10 = 7 × 3/10 × 3 = 21/30
  4. Subtract the two like fractions:
    4/30 - 21/30 = 4 - 21/30 = -17/30

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