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Subtract 28/8 from 7/9

1st number: 7/9, 2nd number: 3 4/8

7/9 - 28/8 is -49/18.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 8 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 9 × 8 = 72,
    7/9 = 7 × 8/9 × 8 = 56/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    28/8 = 28 × 9/8 × 9 = 252/72
  4. Subtract the two like fractions:
    56/72 - 252/72 = 56 - 252/72 = -196/72
  5. After reducing the fraction, the answer is -49/18

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