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Subtract 9/70 from 90/10

1st number: 9 0/10, 2nd number: 9/70

90/10 - 9/70 is 621/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 70 is 70

    Next, find the equivalent fraction of both fractional numbers with denominator 70
  2. For the 1st fraction, since 10 × 7 = 70,
    90/10 = 90 × 7/10 × 7 = 630/70
  3. Likewise, for the 2nd fraction, since 70 × 1 = 70,
    9/70 = 9 × 1/70 × 1 = 9/70
  4. Subtract the two like fractions:
    630/70 - 9/70 = 630 - 9/70 = 621/70
  5. In mixed form: 861/70

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