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Subtract 2/10 from 21/8

1st number: 2 5/8, 2nd number: 2/10

21/8 - 2/10 is 97/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 10 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 8 × 5 = 40,
    21/8 = 21 × 5/8 × 5 = 105/40
  3. Likewise, for the 2nd fraction, since 10 × 4 = 40,
    2/10 = 2 × 4/10 × 4 = 8/40
  4. Subtract the two like fractions:
    105/40 - 8/40 = 105 - 8/40 = 97/40
  5. In mixed form: 217/40

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