Subtract 20/27 from 15/30
15/30 - 20/27 is -13/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
15/30 = 15 × 9/30 × 9 = 135/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
20/27 = 20 × 10/27 × 10 = 200/270 - Subtract the two like fractions:
135/270 - 200/270 = 135 - 200/270 = -65/270 - After reducing the fraction, the answer is -13/54
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