Subtract 16/81 from 27/21
1st number: 1 6/21, 2nd number: 16/81
27/21 - 16/81 is 617/567.
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,
27/21 = 27 × 27/21 × 27 = 729/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
16/81 = 16 × 7/81 × 7 = 112/567 - Subtract the two like fractions:
729/567 - 112/567 = 729 - 112/567 = 617/567 - In mixed form: 150/567
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