Subtract 1/3 from 81/30
1st number: 2 21/30, 2nd number: 1/3
81/30 - 1/3 is 71/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
1/3 = 1 × 10/3 × 10 = 10/30 - Subtract the two like fractions:
81/30 - 10/30 = 81 - 10/30 = 71/30 - In mixed form: 211/30
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