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Subtract 90/48 from 12/15

1st number: 12/15, 2nd number: 1 42/48

12/15 - 90/48 is -43/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 48 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    12/15 = 12 × 16/15 × 16 = 192/240
  3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
    90/48 = 90 × 5/48 × 5 = 450/240
  4. Subtract the two like fractions:
    192/240 - 450/240 = 192 - 450/240 = -258/240
  5. After reducing the fraction, the answer is -43/40

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