Subtract 28/9 from 20/81
1st number: 20/81, 2nd number: 3 1/9
20/81 - 28/9 is -232/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
20/81 = 20 × 1/81 × 1 = 20/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
28/9 = 28 × 9/9 × 9 = 252/81 - Subtract the two like fractions:
20/81 - 252/81 = 20 - 252/81 = -232/81
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