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Subtract 21/8 from 35/28

1st number: 1 7/28, 2nd number: 2 5/8

35/28 - 21/8 is -11/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 8 is 56
  2. For the 1st fraction, since 28 × 2 = 56,
    35/28 = 35 × 2/28 × 2 = 70/56
  3. Likewise, for the 2nd fraction, since 8 × 7 = 56,
    21/8 = 21 × 7/8 × 7 = 147/56
  4. Subtract the two fractions:
    70/56 - 147/56 = 70 - 147/56 = -77/56
  5. After reducing the fraction, the answer is -11/8

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