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Subtract 9/10 from 7/30

7/30 - 9/10 is -2/3.

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,
    7/30 = 7 × 1/30 × 1 = 7/30
  3. Likewise, for the 2nd fraction, since 10 × 3 = 30,
    9/10 = 9 × 3/10 × 3 = 27/30
  4. Subtract the two like fractions:
    7/30 - 27/30 = 7 - 27/30 = -20/30
  5. After reducing the fraction, the answer is -2/3

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