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Subtract 20/42 from 42/50

42/50 - 20/42 is 191/525.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 42 is 1050

    Next, find the equivalent fraction of both fractional numbers with denominator 1050
  2. For the 1st fraction, since 50 × 21 = 1050,
    42/50 = 42 × 21/50 × 21 = 882/1050
  3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
    20/42 = 20 × 25/42 × 25 = 500/1050
  4. Subtract the two like fractions:
    882/1050 - 500/1050 = 882 - 500/1050 = 382/1050
  5. After reducing the fraction, the answer is 191/525

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