Subtract 21/6 from 81/10
1st number: 8 1/10, 2nd number: 3 3/6
81/10 - 21/6 is 23/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
81/10 = 81 × 3/10 × 3 = 243/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Subtract the two like fractions:
243/30 - 105/30 = 243 - 105/30 = 138/30 - After reducing the fraction, the answer is 23/5
- In mixed form: 43/5
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