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Subtract 96/90 from 21/28

1st number: 21/28, 2nd number: 1 6/90

21/28 - 96/90 is -19/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 90 is 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    21/28 = 21 × 45/28 × 45 = 945/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    96/90 = 96 × 14/90 × 14 = 1344/1260
  4. Subtract the two fractions:
    945/1260 - 1344/1260 = 945 - 1344/1260 = -399/1260
  5. After reducing the fraction, the answer is -19/60

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