Subtract 54/81 from 48/21
1st number: 2 6/21, 2nd number: 54/81
48/21 - 54/81 is 34/21.
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,
48/21 = 48 × 27/21 × 27 = 1296/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
54/81 = 54 × 7/81 × 7 = 378/567 - Subtract the two like fractions:
1296/567 - 378/567 = 1296 - 378/567 = 918/567 - After reducing the fraction, the answer is 34/21
- In mixed form: 113/21
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