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Subtract 21/50 from 1/4

1/4 - 21/50 is -17/100.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 50 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 4 × 25 = 100,
    1/4 = 1 × 25/4 × 25 = 25/100
  3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
    21/50 = 21 × 2/50 × 2 = 42/100
  4. Subtract the two like fractions:
    25/100 - 42/100 = 25 - 42/100 = -17/100

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