Subtract 20/60 from 15/54
15/54 - 20/60 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 60 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
15/54 = 15 × 10/54 × 10 = 150/540 - Likewise, for the 2nd fraction, since 60 × 9 = 540,
20/60 = 20 × 9/60 × 9 = 180/540 - Subtract the two like fractions:
150/540 - 180/540 = 150 - 180/540 = -30/540 - After reducing the fraction, the answer is -1/18
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