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Subtract 30/48 from 1/20

1/20 - 30/48 is -23/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 48 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 20 × 12 = 240,
    1/20 = 1 × 12/20 × 12 = 12/240
  3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
    30/48 = 30 × 5/48 × 5 = 150/240
  4. Subtract the two like fractions:
    12/240 - 150/240 = 12 - 150/240 = -138/240
  5. After reducing the fraction, the answer is -23/40

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