Subtract 20/18 from 20/27
1st number: 20/27, 2nd number: 1 2/18
20/27 - 20/18 is -10/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
20/27 = 20 × 2/27 × 2 = 40/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
20/18 = 20 × 3/18 × 3 = 60/54 - Subtract the two like fractions:
40/54 - 60/54 = 40 - 60/54 = -20/54 - After reducing the fraction, the answer is -10/27
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