Subtract 81/21 from 60/75
1st number: 60/75, 2nd number: 3 18/21
60/75 - 81/21 is -107/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
60/75 = 60 × 7/75 × 7 = 420/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
81/21 = 81 × 25/21 × 25 = 2025/525 - Subtract the two like fractions:
420/525 - 2025/525 = 420 - 2025/525 = -1605/525 - After reducing the fraction, the answer is -107/35
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