Subtract 20/27 from 81/12
1st number: 6 9/12, 2nd number: 20/27
81/12 - 20/27 is 649/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
81/12 = 81 × 9/12 × 9 = 729/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
20/27 = 20 × 4/27 × 4 = 80/108 - Subtract the two like fractions:
729/108 - 80/108 = 729 - 80/108 = 649/108 - In mixed form: 61/108
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