Subtract 21/81 from 18/6
1st number: 3 0/6, 2nd number: 21/81
18/6 - 21/81 is 74/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
18/6 = 18 × 27/6 × 27 = 486/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162 - Subtract the two like fractions:
486/162 - 42/162 = 486 - 42/162 = 444/162 - After reducing the fraction, the answer is 74/27
- In mixed form: 220/27
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