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Subtract 21/80 from 56/28

1st number: 2 0/28, 2nd number: 21/80

56/28 - 21/80 is 139/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 80 is 560
  2. For the 1st fraction, since 28 × 20 = 560,
    56/28 = 56 × 20/28 × 20 = 1120/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    21/80 = 21 × 7/80 × 7 = 147/560
  4. Subtract the two fractions:
    1120/560 - 147/560 = 1120 - 147/560 = 973/560
  5. After reducing the fraction, the answer is 139/80
  6. In mixed form: 159/80

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