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Subtract 5/63 from 42/21

1st number: 2 0/21, 2nd number: 5/63

42/21 - 5/63 is 121/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 63 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 21 × 3 = 63,
    42/21 = 42 × 3/21 × 3 = 126/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    5/63 = 5 × 1/63 × 1 = 5/63
  4. Subtract the two like fractions:
    126/63 - 5/63 = 126 - 5/63 = 121/63
  5. In mixed form: 158/63

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