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Subtract 48/18 from 21/25

1st number: 21/25, 2nd number: 2 12/18

21/25 - 48/18 is -137/75.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 18 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 25 × 18 = 450,
    21/25 = 21 × 18/25 × 18 = 378/450
  3. Likewise, for the 2nd fraction, since 18 × 25 = 450,
    48/18 = 48 × 25/18 × 25 = 1200/450
  4. Subtract the two like fractions:
    378/450 - 1200/450 = 378 - 1200/450 = -822/450
  5. After reducing the fraction, the answer is -137/75

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