Subtract 21/6 from 10/81
1st number: 10/81, 2nd number: 3 3/6
10/81 - 21/6 is -547/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 6 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
10/81 = 10 × 2/81 × 2 = 20/162 - Likewise, for the 2nd fraction, since 6 × 27 = 162,
21/6 = 21 × 27/6 × 27 = 567/162 - Subtract the two like fractions:
20/162 - 567/162 = 20 - 567/162 = -547/162
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