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Subtract 28/45 from 18/7

1st number: 2 4/7, 2nd number: 28/45

18/7 - 28/45 is 614/315.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 7 × 45 = 315,
    18/7 = 18 × 45/7 × 45 = 810/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    28/45 = 28 × 7/45 × 7 = 196/315
  4. Subtract the two like fractions:
    810/315 - 196/315 = 810 - 196/315 = 614/315
  5. In mixed form: 1299/315

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