Subtract 21/27 from 20/24
20/24 - 21/27 is 1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 24 × 9 = 216,
20/24 = 20 × 9/24 × 9 = 180/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216 - Subtract the two like fractions:
180/216 - 168/216 = 180 - 168/216 = 12/216 - After reducing the fraction, the answer is 1/18
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