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Subtract 30/12 from 25/45

1st number: 25/45, 2nd number: 2 6/12

25/45 - 30/12 is -35/18.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 12 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    25/45 = 25 × 4/45 × 4 = 100/180
  3. Likewise, for the 2nd fraction, since 12 × 15 = 180,
    30/12 = 30 × 15/12 × 15 = 450/180
  4. Subtract the two like fractions:
    100/180 - 450/180 = 100 - 450/180 = -350/180
  5. After reducing the fraction, the answer is -35/18

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