Subtract 1/21 from 14/54
14/54 - 1/21 is 40/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
14/54 = 14 × 7/54 × 7 = 98/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
1/21 = 1 × 18/21 × 18 = 18/378 - Subtract the two like fractions:
98/378 - 18/378 = 98 - 18/378 = 80/378 - After reducing the fraction, the answer is 40/189
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