Subtract 28/81 from 28/4
1st number: 7 0/4, 2nd number: 28/81
28/4 - 28/81 is 539/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
28/4 = 28 × 81/4 × 81 = 2268/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
28/81 = 28 × 4/81 × 4 = 112/324 - Subtract the two like fractions:
2268/324 - 112/324 = 2268 - 112/324 = 2156/324 - After reducing the fraction, the answer is 539/81
- In mixed form: 653/81
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