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Subtract 15/9 from 30/7

1st number: 4 2/7, 2nd number: 1 6/9

30/7 - 15/9 is 55/21.

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,
    30/7 = 30 × 9/7 × 9 = 270/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    15/9 = 15 × 7/9 × 7 = 105/63
  4. Subtract the two fractions:
    270/63 - 105/63 = 270 - 105/63 = 165/63
  5. After reducing the fraction, the answer is 55/21
  6. In mixed form: 213/21

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