Subtract 20/9 from 16/81
1st number: 16/81, 2nd number: 2 2/9
16/81 - 20/9 is -164/81.
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,
16/81 = 16 × 1/81 × 1 = 16/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
20/9 = 20 × 9/9 × 9 = 180/81 - Subtract the two like fractions:
16/81 - 180/81 = 16 - 180/81 = -164/81
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