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Subtract 10/70 from 7/45

7/45 - 10/70 is 4/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 45 × 14 = 630,
    7/45 = 7 × 14/45 × 14 = 98/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    10/70 = 10 × 9/70 × 9 = 90/630
  4. Subtract the two like fractions:
    98/630 - 90/630 = 98 - 90/630 = 8/630
  5. After reducing the fraction, the answer is 4/315

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