Subtract 21/27 from 4/9
4/9 - 21/27 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 9 × 3 = 27,
4/9 = 4 × 3/9 × 3 = 12/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
21/27 = 21 × 1/27 × 1 = 21/27 - Subtract the two like fractions:
12/27 - 21/27 = 12 - 21/27 = -9/27 - After reducing the fraction, the answer is -1/3
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