Subtract 21/36 from 1/3
1/3 - 21/36 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 3 × 12 = 36,
1/3 = 1 × 12/3 × 12 = 12/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Subtract the two like fractions:
12/36 - 21/36 = 12 - 21/36 = -9/36 - After reducing the fraction, the answer is -1/4
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