Subtract 1/54 from 21/63
21/63 - 1/54 is 17/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 63 × 6 = 378,
21/63 = 21 × 6/63 × 6 = 126/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
1/54 = 1 × 7/54 × 7 = 7/378 - Subtract the two like fractions:
126/378 - 7/378 = 126 - 7/378 = 119/378 - After reducing the fraction, the answer is 17/54
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