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Subtract 3/7 from 21/2

1st number: 10 1/2, 2nd number: 3/7

21/2 - 3/7 is 141/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 7 is 14

    Next, find the equivalent fraction of both fractional numbers with denominator 14
  2. For the 1st fraction, since 2 × 7 = 14,
    21/2 = 21 × 7/2 × 7 = 147/14
  3. Likewise, for the 2nd fraction, since 7 × 2 = 14,
    3/7 = 3 × 2/7 × 2 = 6/14
  4. Subtract the two like fractions:
    147/14 - 6/14 = 147 - 6/14 = 141/14
  5. In mixed form: 101/14

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