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Subtract 21/56 from 48/42

1st number: 1 6/42, 2nd number: 21/56

48/42 - 21/56 is 43/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 56 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    48/42 = 48 × 4/42 × 4 = 192/168
  3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
    21/56 = 21 × 3/56 × 3 = 63/168
  4. Subtract the two like fractions:
    192/168 - 63/168 = 192 - 63/168 = 129/168
  5. After reducing the fraction, the answer is 43/56

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