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Subtract 21/5 from 10/28

1st number: 10/28, 2nd number: 4 1/5

10/28 - 21/5 is -269/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 5 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    10/28 = 10 × 5/28 × 5 = 50/140
  3. Likewise, for the 2nd fraction, since 5 × 28 = 140,
    21/5 = 21 × 28/5 × 28 = 588/140
  4. Subtract the two like fractions:
    50/140 - 588/140 = 50 - 588/140 = -538/140
  5. After reducing the fraction, the answer is -269/70

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