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Subtract 70/9 from 56/20

1st number: 2 16/20, 2nd number: 7 7/9

56/20 - 70/9 is -224/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    56/20 = 56 × 9/20 × 9 = 504/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    70/9 = 70 × 20/9 × 20 = 1400/180
  4. Subtract the two fractions:
    504/180 - 1400/180 = 504 - 1400/180 = -896/180
  5. After reducing the fraction, the answer is -224/45

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