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Subtract 21/28 from 36/10

1st number: 3 6/10, 2nd number: 21/28

36/10 - 21/28 is 57/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 28 is 140
  2. For the 1st fraction, since 10 × 14 = 140,
    36/10 = 36 × 14/10 × 14 = 504/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    21/28 = 21 × 5/28 × 5 = 105/140
  4. Subtract the two fractions:
    504/140 - 105/140 = 504 - 105/140 = 399/140
  5. After reducing the fraction, the answer is 57/20
  6. In mixed form: 217/20

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