Subtract 27/20 from 21/56
1st number: 21/56, 2nd number: 1 7/20
21/56 - 27/20 is -39/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
27/20 = 27 × 14/20 × 14 = 378/280 - Subtract the two like fractions:
105/280 - 378/280 = 105 - 378/280 = -273/280 - After reducing the fraction, the answer is -39/40
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