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Subtract 48/42 from 21/24

1st number: 21/24, 2nd number: 1 6/42

21/24 - 48/42 is -15/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 42 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 24 × 7 = 168,
    21/24 = 21 × 7/24 × 7 = 147/168
  3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
    48/42 = 48 × 4/42 × 4 = 192/168
  4. Subtract the two like fractions:
    147/168 - 192/168 = 147 - 192/168 = -45/168
  5. After reducing the fraction, the answer is -15/56

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