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Subtract 48/9 from 21/12

1st number: 1 9/12, 2nd number: 5 3/9

21/12 - 48/9 is -43/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 9 is 36

    Next, find the equivalent fraction of both fractional numbers with denominator 36
  2. For the 1st fraction, since 12 × 3 = 36,
    21/12 = 21 × 3/12 × 3 = 63/36
  3. Likewise, for the 2nd fraction, since 9 × 4 = 36,
    48/9 = 48 × 4/9 × 4 = 192/36
  4. Subtract the two like fractions:
    63/36 - 192/36 = 63 - 192/36 = -129/36
  5. After reducing the fraction, the answer is -43/12

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