Subtract 10/81 from 20/9
1st number: 2 2/9, 2nd number: 10/81
20/9 - 10/81 is 170/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
20/9 = 20 × 9/9 × 9 = 180/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
10/81 = 10 × 1/81 × 1 = 10/81 - Subtract the two like fractions:
180/81 - 10/81 = 180 - 10/81 = 170/81 - In mixed form: 28/81
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