Subtract 81/35 from 20/27
1st number: 20/27, 2nd number: 2 11/35
20/27 - 81/35 is -1487/945.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 35 is 945
Next, find the equivalent fraction of both fractional numbers with denominator 945 - For the 1st fraction, since 27 × 35 = 945,
20/27 = 20 × 35/27 × 35 = 700/945 - Likewise, for the 2nd fraction, since 35 × 27 = 945,
81/35 = 81 × 27/35 × 27 = 2187/945 - Subtract the two like fractions:
700/945 - 2187/945 = 700 - 2187/945 = -1487/945
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