Subtract 5/81 from 21/10
1st number: 2 1/10, 2nd number: 5/81
21/10 - 5/81 is 1651/810.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
21/10 = 21 × 81/10 × 81 = 1701/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
5/81 = 5 × 10/81 × 10 = 50/810 - Subtract the two like fractions:
1701/810 - 50/810 = 1701 - 50/810 = 1651/810 - In mixed form: 231/810
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