Subtract 21/56 from 1/3
1/3 - 21/56 is -1/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 3 × 56 = 168,
1/3 = 1 × 56/3 × 56 = 56/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Subtract the two like fractions:
56/168 - 63/168 = 56 - 63/168 = -7/168 - After reducing the fraction, the answer is -1/24
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