Subtract 20/45 from 1/3
1/3 - 20/45 is -1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
1/3 = 1 × 15/3 × 15 = 15/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
20/45 = 20 × 1/45 × 1 = 20/45 - Subtract the two like fractions:
15/45 - 20/45 = 15 - 20/45 = -5/45 - After reducing the fraction, the answer is -1/9
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