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Subtract 72/42 from 9/25

1st number: 9/25, 2nd number: 1 30/42

9/25 - 72/42 is -237/175.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 42 is 1050

    Next, find the equivalent fraction of both fractional numbers with denominator 1050
  2. For the 1st fraction, since 25 × 42 = 1050,
    9/25 = 9 × 42/25 × 42 = 378/1050
  3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
    72/42 = 72 × 25/42 × 25 = 1800/1050
  4. Subtract the two like fractions:
    378/1050 - 1800/1050 = 378 - 1800/1050 = -1422/1050
  5. After reducing the fraction, the answer is -237/175

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