Subtract 54/40 from 27/28
1st number: 27/28, 2nd number: 1 14/40
27/28 - 54/40 is -27/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
27/28 = 27 × 10/28 × 10 = 270/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
54/40 = 54 × 7/40 × 7 = 378/280 - Subtract the two like fractions:
270/280 - 378/280 = 270 - 378/280 = -108/280 - After reducing the fraction, the answer is -27/70
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