Subtract 54/81 from 72/63
1st number: 1 9/63, 2nd number: 54/81
72/63 - 54/81 is 10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 63 × 9 = 567,
72/63 = 72 × 9/63 × 9 = 648/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
54/81 = 54 × 7/81 × 7 = 378/567 - Subtract the two like fractions:
648/567 - 378/567 = 648 - 378/567 = 270/567 - After reducing the fraction, the answer is 10/21
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