Subtract 20/27 from 40/56
40/56 - 20/27 is -5/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 27 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 56 × 27 = 1512,
40/56 = 40 × 27/56 × 27 = 1080/1512 - Likewise, for the 2nd fraction, since 27 × 56 = 1512,
20/27 = 20 × 56/27 × 56 = 1120/1512 - Subtract the two like fractions:
1080/1512 - 1120/1512 = 1080 - 1120/1512 = -40/1512 - After reducing the fraction, the answer is -5/189
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