Subtract 42/81 from 28/9
1st number: 3 1/9, 2nd number: 42/81
28/9 - 42/81 is 70/27.
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,
28/9 = 28 × 9/9 × 9 = 252/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
42/81 = 42 × 1/81 × 1 = 42/81 - Subtract the two like fractions:
252/81 - 42/81 = 252 - 42/81 = 210/81 - After reducing the fraction, the answer is 70/27
- In mixed form: 216/27
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