Subtract 81/21 from 27/60
1st number: 27/60, 2nd number: 3 18/21
27/60 - 81/21 is -477/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
27/60 = 27 × 7/60 × 7 = 189/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
81/21 = 81 × 20/21 × 20 = 1620/420 - Subtract the two like fractions:
189/420 - 1620/420 = 189 - 1620/420 = -1431/420 - After reducing the fraction, the answer is -477/140
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