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Subtract 1/50 from 21/42

21/42 - 1/50 is 12/25.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 50 is 1050
  2. For the 1st fraction, since 42 × 25 = 1050,
    21/42 = 21 × 25/42 × 25 = 525/1050
  3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
    1/50 = 1 × 21/50 × 21 = 21/1050
  4. Subtract the two fractions:
    525/1050 - 21/1050 = 525 - 21/1050 = 504/1050
  5. After reducing the fraction, the answer is 12/25

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