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Subtract 1/9 from 15/7

1st number: 2 1/7, 2nd number: 1/9

15/7 - 1/9 is 128/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 9 is 63
  2. For the 1st fraction, since 7 × 9 = 63,
    15/7 = 15 × 9/7 × 9 = 135/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    1/9 = 1 × 7/9 × 7 = 7/63
  4. Subtract the two fractions:
    135/63 - 7/63 = 135 - 7/63 = 128/63
  5. In mixed form: 22/63

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