Subtract 40/81 from 98/21
1st number: 4 14/21, 2nd number: 40/81
98/21 - 40/81 is 338/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 21 × 27 = 567,
98/21 = 98 × 27/21 × 27 = 2646/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
40/81 = 40 × 7/81 × 7 = 280/567 - Subtract the two like fractions:
2646/567 - 280/567 = 2646 - 280/567 = 2366/567 - After reducing the fraction, the answer is 338/81
- In mixed form: 414/81
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