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Subtract 70/45 from 18/70

1st number: 18/70, 2nd number: 1 25/45

18/70 - 70/45 is -409/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 45 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    18/70 = 18 × 9/70 × 9 = 162/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    70/45 = 70 × 14/45 × 14 = 980/630
  4. Subtract the two fractions:
    162/630 - 980/630 = 162 - 980/630 = -818/630
  5. After reducing the fraction, the answer is -409/315

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