Subtract 8/24 from 1/21
1/21 - 8/24 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
1/21 = 1 × 8/21 × 8 = 8/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
8/24 = 8 × 7/24 × 7 = 56/168 - Subtract the two like fractions:
8/168 - 56/168 = 8 - 56/168 = -48/168 - After reducing the fraction, the answer is -2/7
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