Subtract 18/81 from 21/14
1st number: 1 7/14, 2nd number: 18/81
21/14 - 18/81 is 23/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 14 × 81 = 1134,
21/14 = 21 × 81/14 × 81 = 1701/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
18/81 = 18 × 14/81 × 14 = 252/1134 - Subtract the two like fractions:
1701/1134 - 252/1134 = 1701 - 252/1134 = 1449/1134 - After reducing the fraction, the answer is 23/18
- In mixed form: 15/18
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