Subtract 15/54 from 1/5
1/5 - 15/54 is -7/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
1/5 = 1 × 54/5 × 54 = 54/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
15/54 = 15 × 5/54 × 5 = 75/270 - Subtract the two like fractions:
54/270 - 75/270 = 54 - 75/270 = -21/270 - After reducing the fraction, the answer is -7/90
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