Subtract 30/21 from 81/3
1st number: 27 0/3, 2nd number: 1 9/21
81/3 - 30/21 is 179/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
81/3 = 81 × 7/3 × 7 = 567/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
30/21 = 30 × 1/21 × 1 = 30/21 - Subtract the two like fractions:
567/21 - 30/21 = 567 - 30/21 = 537/21 - After reducing the fraction, the answer is 179/7
- In mixed form: 254/7
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