Subtract 15/81 from 21/14
1st number: 1 7/14, 2nd number: 15/81
21/14 - 15/81 is 71/54.
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,
15/81 = 15 × 14/81 × 14 = 210/1134 - Subtract the two like fractions:
1701/1134 - 210/1134 = 1701 - 210/1134 = 1491/1134 - After reducing the fraction, the answer is 71/54
- In mixed form: 117/54
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