Subtract 18/27 from 18/30
18/30 - 18/27 is -1/15.
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,
18/30 = 18 × 9/30 × 9 = 162/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
18/27 = 18 × 10/27 × 10 = 180/270 - Subtract the two like fractions:
162/270 - 180/270 = 162 - 180/270 = -18/270 - After reducing the fraction, the answer is -1/15
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