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Subtract 28/70 from 80/45

1st number: 1 35/45, 2nd number: 28/70

80/45 - 28/70 is 62/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 70 is 630
  2. For the 1st fraction, since 45 × 14 = 630,
    80/45 = 80 × 14/45 × 14 = 1120/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    28/70 = 28 × 9/70 × 9 = 252/630
  4. Subtract the two fractions:
    1120/630 - 252/630 = 1120 - 252/630 = 868/630
  5. After reducing the fraction, the answer is 62/45
  6. In mixed form: 117/45

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