Subtract 5/21 from 81/6
1st number: 13 3/6, 2nd number: 5/21
81/6 - 5/21 is 557/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
81/6 = 81 × 7/6 × 7 = 567/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
5/21 = 5 × 2/21 × 2 = 10/42 - Subtract the two like fractions:
567/42 - 10/42 = 567 - 10/42 = 557/42 - In mixed form: 1311/42
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