Subtract 21/54 from 2/4
2/4 - 21/54 is 1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
2/4 = 2 × 27/4 × 27 = 54/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108 - Subtract the two like fractions:
54/108 - 42/108 = 54 - 42/108 = 12/108 - After reducing the fraction, the answer is 1/9
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