Subtract 1/21 from 20/24
20/24 - 1/21 is 11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
1/21 = 1 × 8/21 × 8 = 8/168 - Subtract the two like fractions:
140/168 - 8/168 = 140 - 8/168 = 132/168 - After reducing the fraction, the answer is 11/14
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