Subtract 27/25 from 81/21
1st number: 3 18/21, 2nd number: 1 2/25
81/21 - 27/25 is 486/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
81/21 = 81 × 25/21 × 25 = 2025/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
27/25 = 27 × 21/25 × 21 = 567/525 - Subtract the two like fractions:
2025/525 - 567/525 = 2025 - 567/525 = 1458/525 - After reducing the fraction, the answer is 486/175
- In mixed form: 2136/175
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