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Subtract 7/56 from 21/10

1st number: 2 1/10, 2nd number: 7/56

21/10 - 7/56 is 79/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 56 is 280
  2. For the 1st fraction, since 10 × 28 = 280,
    21/10 = 21 × 28/10 × 28 = 588/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    7/56 = 7 × 5/56 × 5 = 35/280
  4. Subtract the two fractions:
    588/280 - 35/280 = 588 - 35/280 = 553/280
  5. After reducing the fraction, the answer is 79/40
  6. In mixed form: 139/40

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