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Subtract 10/8 from 21/4

1st number: 5 1/4, 2nd number: 1 2/8

21/4 - 10/8 is 4/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 8 is 8

    Next, find the equivalent fraction of both fractional numbers with denominator 8
  2. For the 1st fraction, since 4 × 2 = 8,
    21/4 = 21 × 2/4 × 2 = 42/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    10/8 = 10 × 1/8 × 1 = 10/8
  4. Subtract the two like fractions:
    42/8 - 10/8 = 42 - 10/8 = 32/8
  5. After reducing the fraction, the answer is 4/1

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