Subtract 18/27 from 2/5
2/5 - 18/27 is -4/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 5 × 27 = 135,
2/5 = 2 × 27/5 × 27 = 54/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
18/27 = 18 × 5/27 × 5 = 90/135 - Subtract the two like fractions:
54/135 - 90/135 = 54 - 90/135 = -36/135 - After reducing the fraction, the answer is -4/15
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