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Subtract 7/70 from 8/45

8/45 - 7/70 is 7/90.

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,
    8/45 = 8 × 14/45 × 14 = 112/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    7/70 = 7 × 9/70 × 9 = 63/630
  4. Subtract the two like fractions:
    112/630 - 63/630 = 112 - 63/630 = 49/630
  5. After reducing the fraction, the answer is 7/90

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