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Subtract 20/5 from 7/9

1st number: 7/9, 2nd number: 4 0/5

7/9 - 20/5 is -29/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 5 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 9 × 5 = 45,
    7/9 = 7 × 5/9 × 5 = 35/45
  3. Likewise, for the 2nd fraction, since 5 × 9 = 45,
    20/5 = 20 × 9/5 × 9 = 180/45
  4. Subtract the two like fractions:
    35/45 - 180/45 = 35 - 180/45 = -145/45
  5. After reducing the fraction, the answer is -29/9

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