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Subtract 80/21 from 60/9

1st number: 6 6/9, 2nd number: 3 17/21

60/9 - 80/21 is 20/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 21 is 63
  2. For the 1st fraction, since 9 × 7 = 63,
    60/9 = 60 × 7/9 × 7 = 420/63
  3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
    80/21 = 80 × 3/21 × 3 = 240/63
  4. Subtract the two fractions:
    420/63 - 240/63 = 420 - 240/63 = 180/63
  5. After reducing the fraction, the answer is 20/7
  6. In mixed form: 26/7

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