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Subtract 70/27 from 81/80

1st number: 1 1/80, 2nd number: 2 16/27

81/80 - 70/27 is -3413/2160.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 27 is 2160
  2. For the 1st fraction, since 80 × 27 = 2160,
    81/80 = 81 × 27/80 × 27 = 2187/2160
  3. Likewise, for the 2nd fraction, since 27 × 80 = 2160,
    70/27 = 70 × 80/27 × 80 = 5600/2160
  4. Subtract the two fractions:
    2187/2160 - 5600/2160 = 2187 - 5600/2160 = -3413/2160

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