Subtract 15/20 from 15/27
15/27 - 15/20 is -7/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
15/27 = 15 × 20/27 × 20 = 300/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
15/20 = 15 × 27/20 × 27 = 405/540 - Subtract the two like fractions:
300/540 - 405/540 = 300 - 405/540 = -105/540 - After reducing the fraction, the answer is -7/36
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