Subtract 12/21 from 81/25
1st number: 3 6/25, 2nd number: 12/21
81/25 - 12/21 is 467/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
81/25 = 81 × 21/25 × 21 = 1701/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
12/21 = 12 × 25/21 × 25 = 300/525 - Subtract the two like fractions:
1701/525 - 300/525 = 1701 - 300/525 = 1401/525 - After reducing the fraction, the answer is 467/175
- In mixed form: 2117/175
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