Subtract 12/54 from 1/20
1/20 - 12/54 is -31/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
1/20 = 1 × 27/20 × 27 = 27/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
12/54 = 12 × 10/54 × 10 = 120/540 - Subtract the two like fractions:
27/540 - 120/540 = 27 - 120/540 = -93/540 - After reducing the fraction, the answer is -31/180
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