Subtract 81/25 from 45/21
1st number: 2 3/21, 2nd number: 3 6/25
45/21 - 81/25 is -192/175.
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,
45/21 = 45 × 25/21 × 25 = 1125/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
81/25 = 81 × 21/25 × 21 = 1701/525 - Subtract the two like fractions:
1125/525 - 1701/525 = 1125 - 1701/525 = -576/525 - After reducing the fraction, the answer is -192/175
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