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Subtract 42/50 from 72/42

1st number: 1 30/42, 2nd number: 42/50

72/42 - 42/50 is 153/175.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 1050
  2. For the 1st fraction, since 42 × 25 = 1050,
    72/42 = 72 × 25/42 × 25 = 1800/1050
  3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
    42/50 = 42 × 21/50 × 21 = 882/1050
  4. Subtract the two like fractions:
    1800/1050 - 882/1050 = 1800 - 882/1050 = 918/1050
  5. After reducing the fraction, the answer is 153/175

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