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Subtract 30/10 from 70/80

1st number: 70/80, 2nd number: 3 0/10

70/80 - 30/10 is -17/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 10 is 80
  2. For the 1st fraction, since 80 × 1 = 80,
    70/80 = 70 × 1/80 × 1 = 70/80
  3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
    30/10 = 30 × 8/10 × 8 = 240/80
  4. Subtract the two fractions:
    70/80 - 240/80 = 70 - 240/80 = -170/80
  5. After reducing the fraction, the answer is -17/8

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